When Windows wants to nag you it makes marketing-oriented screens that I think are visually attractive in a commercial way if not quite as 'cute', 'cool' and 's--y' as a gatcha screen from a mobile game. These sure look like they were drawn with an HTML-based rendering system and if they weren't, they were certainly inspired by commercial art on the web.

When MacOS wants to nag you it pops up a Liquid Glass vandalized version of the 1999 retread of the modal confirm dialog from the 1984 MacOS.

I wish both of them had NEVER OPEN A MODAL DIALOG THAT I DIDN'T ASK FOR EVER AGAIN button that took 80% of the space and a tiny little greyed-out link at the bottom that said "maybe just maybe I want to hear about this in three years" but from a graphic art viewpoint I laugh at MacOS.