Your logic is entirely flawed here.

"Every handheld must also be a home console because, well, you can play them all at home."

A handheld is a device that can be played in any location, just because you are playing it at home doesn't make it a "home console", you're trying to say him being literal in both senses is wrong, but he's saying the device is a handheld because it CAN be used in any location, not because it's necessarily being used outside the house.

His defintion of a handheld - "a device that can be carried around and played in your hands is a handheld."

Does not mean that his definiton of a home console has to be simply - "a device played at home."

In the forum thread this quote was taken from, he specifically says "if the Eurogamer specs are correct" in a later post. So I think this is definitely the correct tact to take right now.

or Thunder bolt port 

Basically what Barkley said, a handheld is a device that does not need to be plugged directly into a power source and can be played wherever you go.

A home console is a device that is plugged into a power source, played on a TV and has a seperate controller.

Switch is both.

A handheld is more than just a device that can be played in any location. They're more than just a device that can be played in your hands. That's the point I'm making here. Of course I don't think a handheld is a home console. That's absurd.

People are using the name to literally define the tech stringently. That's silly. Handhelds were named at a time where there was nothing else that could be held in your hands. It was a simple name to comminicate what differentiated the divice from everything else out there. Same with laptop. A laptop isn't "a computer that can be used on your lap." It's far more specific, but at the time there was nothing else that could do that, so the name stuck. Now you can use tablets on your lap and, if you wanted to, you could use a spartphone on your lap. They're both computing devices far more capable than the desktops of back then. Does that make them laptops? Of course not.

If there was foreknowledge of the existence of a device like the tablet that could also be used on your lap, laptops likely would have never been called laptops. If there was foreknowledge of the existence of a device like the Switch that could also be held in your hands, handhelds likely would have never been called handhelds.

And him being literal in both senses is wrong. He said a device that can be carried around in your hands is a handheld. Fine. Then the same rules of definition must be followed for a home console. A device that can be played at home. It doesn't work, because he shouldn't be deriving stringent meaning from labels like that.

His definition for a home console was correct because it was interpretive. Doing that for handhelds has to take into account its pocketable form factor and is designed specifically and exclusively to be played in your hands. Even if you take into account extremes like the 3DS XL or the 2DS, it's just an iterative spin off of the OG 3DS, which was designed to be pocketable. 

The Switch is not that. It was designed from the onset to not have the form factor or the industrial design of a handheld or a home console, because it's neither. The three use cases are docked, kick-stood, and being held. There's not a doubt in my mind that the design philosophy of the Switch revolves around the middle use case, because that's the only one that hasn't existed before. That's what the Switch is. That's its intended use case.

Everything else revolves around the fact that it's not a situation-agnostic use case. It can't be the only use-case because that would be inconvenient in too many scenarios. You have the dock for the first use case and the attached controllers for the third, but the second is what the Switch was designed to be used for. Not to be a handheld. Not to be a home console. Not to be both put together. It's something else.

So the Sega Game Gear was a home conosle system!  I kid but not too much...  I mainly remember being stuck near a power outlet using the power adapter for Game Gear considering it would eat through batteries/rechargeable batteries in no time.

Basicly this.

I dont think leaked specs are wrong, but they dont telling whole picture about Switch hardware, we dont know lotsa details about specs and what exactly Nintendo customised on chip (because even Nvidia confirmed that is customized chip). Maybe he is right, but at sounds he is just guessing based only those rumoured specs without any other info or detail about Switch, for instance custimesed chip can make somewhat different picture, or those tools and APIs that Nvidia specifically made for Switch.

It's definitely better to wait on opinion of some dev that actually knows all facts about Switch hardware and actually working on Switch.

Hey now, by that logic the original 3DS was also a home console. :P Game Gear was no Game Boy, but it still had a battery life of around 5 to 6 hours! Original 3DS was 3 to 5. Of course, the big difference is that the 3DS operated on a built in rechargeable lithium ion battery, making it way less costly and more convenient to power, but still..

Japanese devs seems to have much more focus on personal ties to platform holders. this is true for Nintendo-devs too. Even inside a dev there is a clear separation between platforms. Etrian Odyssey never came to Vita, although it shouldn't be a technical problem.

From the moment Swith was revealed, it was obvious it wasn't going to get strong PS4/Xbone multiplat support.

The whole point of Switch is that it's aiming to be its own thing rather than a third multiplat machine.