Microsoft can talk all they want about design, but I won't respect them until they fix this UI inconsistency bullshit right here.
https://mastodon.cloud/media/C8c9akd3hrSYAzSzDdI
It's not only the window styles, but also icons, fonts and everything else. They have never fully committed to the flat look.
Seriously, when Linux has multiple desktop UIs more consistent than yours, you have a HUGE problem.