Not only is it enabled hy default ... it magically gets enabled by default after some days, desktop spotlight feature that pushes some lock screen wallpapers and trivia overriding my personal wallpaper, Edge trying to do the same thing to homepage, edge trying to steal browser favourites and extensions from other installed browsers once every few weeks, edge stealing default app linkage for PDF viewing, copilot in various flavours appearing on taskbar, start menu, edge, ...it's mayhem out there.
Death by a thousand cuts. So many micro abuses by the OS that keeps reminding you who has the power.
I do get lockscreen wallpapers, but in general I find them quite pretty and interesting. I've never tried changing to a fixed lockscreen wallpaper, though I I do have a fixed, custom desktop one. I can't think that people are obsessing about the lockscreen???
I don't see any of the other things you do. I use Edge as my default browser, with uBlock installed and it all seems to work. There is a Copilot icon, but I think I could remove it if it irritated me, which it doesn't. My Asus Zenbook has a Copilot key which irritates me much less than other aspects of the keyboard layout which have nothing to do with Microsoft.
All in all, I like Windows 11. I don't see how it has made things worse than any of the other NT versions.