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
the worst thing about windows 10 aside from pushing the store (which I have found mostly easy to turn off) is that you can open five different settings folders and encounter six different ui elements.
edit: opening a windows 10 system menu to then search for the screensaver function and get the same style of window you got in xp is wild lol. also its impossible to even get to the screensaver settings without searching because I guess they don't think you need it anymore, but its so weird to see menus and folders formatted however they were when the feature was first introduced lol.
also this specific prompt absolutely filled me with rage for a long time. you can just click not on the window to cancel it but WHY is there no x in the corner to cancel out? disgusting design.