Whilst I agree with you in everthing but the first 2 words of your post, I think this is yet another “look at this cool gadget” post that overhypes something, and that is a kind of spam we get a bit of around here, even if nowhere near the levels of the Elon crap or even just US politics.
This is especially frustratingfor people who, like me, looked at the diagram they link from their article and found out it’s pretty much the same as a run of the mill breadboard power adaptor with a USB-C connector and a slightly better design than the cheap chinese ones, rather than something trully supporting USB-PD (this thing doesn’t even support the basic USB 1.0 negotiation needed to get more than 150mA when connecting to a proper USB host).
That the article then mentions a “crowdfunding campaign” for something that a junior EE can design with a bit of datasheet digging, carries a bit of a stink of a cash-grab, so seeing it as spam is understandable.
In my own personal experience, as a gamer and having switched my main machine at home to Pop!OS some months ago, it’s more like “need Windows to run nearly 5% of games” thanks to Wine and Proton which work as adaption layers to let Windows programs (not just games) run in Linux.
(Curiously I use a lot more Wine with Lutris than Proton and Steam, so my success rate is even down to how far the main Wine project got, rather than any special juice that Steam might have added on their Proton branch of Wine - you don’t really need Steam or Proton to run most games in Linux and the success rate for just running games from GoG or even pirated ones is just as good and from some games it’s even the case that the Steam version won’t run but a pirated version runs just fine, probably because it was the DRM that the pirates cracked that caused the problems).
Mind you, at least in my games collection only maybe 1 in 20 have native Linux versions (which is still better than 99% of games being Windows only), but because of adaption layers like Wine and Proton, for most games you can run the Windows version of it in Linux.
Absolutelly, in the old days it definitelly was the case that Windows was needed for nearly 99% of games (I should know: I’ve been trying to switch my gaming to Linux since the late 90s), but that’s not at all the case anymore.
Your idea of how hard it is to game on Linux is at least 1 decade out of date.