I think people are missing the point in this thread and not watching OP's video.
Granted handheld PC gaming isn't exactly new, the Steam Deck is made and backed by the biggest platform on PC (Valve Corporation). And they are offering a mini PC from $399. That's big. And because they own the platform, they can take it hit in hardware costs and subsidize it by software sales (very much like consoles). This hasn't been done before yet on PC and is exciting to a lot of PC gamers especially those invested in Steam. I mean emulation is just one of the many things PC's.. its a multimedia device, a productivity device and gaming system on the go. It smaller than a laptop and easier to pick up and play.
On top of this Steam as a platform is absolutely huge and not to be overlooked. If we look at how many active concurrent people playing and online - https://store.steampowered.com/stats/. There are millions of active gamers on there at any given time.
OP was looking this at a hardware level and to that point. The Tegra X1 in the Switch is getting a little long in the tooth and with the OLED announcement, and then the Deck, comparisons are going to made. The Deck really did come in the exact right time. Yes it won't likely won't affect Nintendo sales in any meaningful way and I don't think anyone on this site believes this so I'm not sure why this is echoed so much on here.
