Not even about user data, this is just the side dish. You have complete control over the system and spy on, and probably even can do, whatever

Why is he so angry all the time?

Was meant with tongue in cheek - at least that was meant with the smiley

But still, could very much think of some hungry background processes. I’m just guessing, as I don’t run Win11 anywhere

Yeah, that’s usually called optimization ;⁠-⁠)

Also don’t know how much stuff runs in the background on W11, maybe there is now more stuff needing memory and CPU time

I’m not really sure, if they know what a VPN actually is

I recently got myself a Pixel 7 Pro. the preinstalled OS really tries to push all the Google stuff on you, which isn’t great.
but after a quick look around for 1 hour, I installed GrapheneOS and am very happy with it

although I’d really like to have a Linux smartphone. but there seems to be none with good hardware…