I've been using Fedora+KDE for over a decade, Windows 8 was last version of Windows I had installed at home, and we all know what a squarified mess that was.
Gnome is fine, but it's just not for me.
For everyone on here that complains about Windows requiring an 'online' account, MacOS does as well, but the perception is different. MacOS, just kind of quietly does it, with no ceremony, but Windows does a Ballmer-esque right-in-your-face demand. I couldn't possibly comment on Windows 11 as I've yet to use it, but Win10 felt a lot worse than Windows 7 which was probably the last high water mark for Windows after Windows 2000.
The familiarity is great but the thing that really draws me to Plasma over Gnome is that the KDE developers seem to have an attitude of just implementing the features people want even if it's not perfect yet. Gnome is polished, but it's missing so many basic configuration options out of the box.
It's kind of funny because when I first got into linux it was practically the opposite story. Back in the day of KDE 2 or 3 and Gnome 2, KDE was the slow one to bring in features while Gnome felt like the wild wild west.
Now it seems like Gnome has gone down a practically walled garden path which I don't love. Last I tried it, I wanted to launch an app focused and in full screen on startup. The gnome response for that was basically "You're not allowed to do that".
Afaik, you can choose to not sign into icloud when creating an account on your mac. It's not a hard requirement like it is on Windows, though they do obviously strongly nudge you to login to icloud.
At least on the latest Sequoia, there has been no hard requirement for an online account. They nudge you towards it, but you can decline and continue. As far as I can remember, macOS has never required an online account to set up a Mac.
You might need it for the App Store if anything, but even then... You don't need the app store for installing software. Mac is at its peak currently, though the new glass UI stuff is a little over the top for me. I miss the old simpler UI. I'm sure I'll get used to it eventually.
The Mac 100% does not require you to sign in to an Apple Account to use it. You can go about with a local account only just fine and you can easily do it right from the OOBE setup UI — no tricks involved whatsoever.
I only use KDE, though it has weird instability from time to time. They just changed which gcc version I'm on so I am not sure if I've noticed the same instability or not. Overall though KDE is the perfect DE for me.
Gnome is fine, but it's just not for me.
For everyone on here that complains about Windows requiring an 'online' account, MacOS does as well, but the perception is different. MacOS, just kind of quietly does it, with no ceremony, but Windows does a Ballmer-esque right-in-your-face demand. I couldn't possibly comment on Windows 11 as I've yet to use it, but Win10 felt a lot worse than Windows 7 which was probably the last high water mark for Windows after Windows 2000.