It's completely inconsistent with traditional Windows design language and there's no "Cancel" button or an X in the corner to click on so you can't cancel out of it with your mouse and have to reach for Esc on your keyboard
It also tries to funnel you into a shitty Microsoft service
No, the worst part is the damn ads,
Get windows LTSC and use MAS to activate it. It’s basically an enterprise version that strips the OS of ads, Cortana, store, etc as well as frivolous updates. But it’ll still push security updates.