Eh, that's literally the whole point of Xbox and Windows not being clearly distinct entities like before. You know, when Windows missed out on a few good Fable, Halo, and Gears of Wars games. Back when Xbox was at war with the PC. Now you get cross save if you choose to buy games from their store, which you don't have to do; you can get them on Steam.
Yes, the new Rog Ally is obviously a way for Microsoft to get more people onboard the Xbox ecosystem. But there are plenty of other handhelds that won't use an interface relying on Xbox.
You act as if Microsoft is going to make the Xbox app the only way to launch any game on Windows moving forward. Which isn't the case. You are free to not use their app, and to not get involved in the Xbox ecosystem.
It's literally a non issue for anyone who hate anything related to Xbox, you can just not use it and nothing will change in your daily life.
Are we actually having a conversation about Microsoft doing a QOL adjustment for profit? Isn't that a ship that sailed many decades ago? Windows was born from a gotcha contract screwing over IBM and a business model that ensured maximum profit and proliferation of the OS. It's been a capitalist company from its genesis. Cheap PC compatible computers for everyone, yes, but also billions of dollars in their pockets.