The site actually has a couple decent links. I still wish I had not visited it. To use a term I seem to dust off on VGChartz quite a bit: Hyperbole. And some malformed ideas. And clickbait. MS will almost certainly be doing this, upgrading mid-gen, in some form as well.

Exactly 

"The real, true promise that UWP has for us is the ability to write our code once," said Forza developer Turn10, who used the new UWP Dev Mode to make the next Forza game. "What it means is that it's reduced the development time for us, and that really surfaces not only in the code that we write but also the toolset we get to use--that's the thing that's going to grow the most over time."

Forza Motorsport 6: Apex - Development on the Unified Windows Platform

https://www.youtube.com/watch?v=bQwmN48b3fo

Did you even read what I replied to?

'Devs will just release the one version for PS4 and say well it runs on PS4.5 so that is fine. Only a few real big games and Son'y 1st party will bother full upgrading games to the PS4.5 specs.'

Devs aren't allowed to do that.

Let me hear this from a NON - Microsoft Studies person... Then we can talk.  

This isn't how the things are, Universal Windows App, only make it Easier to port the games from Xbox One, to PC, and Vice Versa, the port isn't made by itself, the developers still need to port it, otherwise would means 100% of PC support for Xbox.

Microsoft, also is likely to follow the same idea, like they mentioned before.

And if Sony, lose the Mommentum with this move, we still have Nintendo, or maybe a new console manufacturer, Microsoft, need to make a Very good move, and Sony, need to make a very big mistake, to Microsoft, take the lead, a Sony's Mistake alone isn't enought, they haven't even a VR Device Yet.

Microsoft is dead in the water with the ONE. there is no coming back with this console. maybe they will do things right with their next console

Even if it does end up happening in the far future, right now we're not even close to a time when third-party publishers and developers are going to pass up putting their games on Steam.  That means your quote will only apply to Microsoft published games, for the most part, unless Microsoft starts paying for Windows Store exclusivity--which actually wouldn't surprise me.

Microsoft won't disrupt anything, until they can get the rest of the world, outside of the USA, on board with their console, imo.

I'm saying if a PS4 already runs in 1080p there is literally zero upgrade needed in order to comply with PS4.5 min reqs.
If the PS4 is running sub-1080p (i.e. 900p), PS4.5 only needs to bring it up to 1080p @ same FPS in order to comply.
I'm saying the latter is very far from "full upgrade" of the game to leverage PS4.5 specs.  I don't think we disagree in general here.