If it only was just moving things around. The control panel has been further castrated while the settings app is just bad. Something about their CPU scheduler changes straight up broke VMware, and obviously MS is in no hurry to fix it resp. cooperate with VMware, being a competitor.
Rounded corners? I couldn't care less. It's a functional downgrade, though.
That's what I'm afraid of. Once some bad actors realize Lemmy is as defenseless as it is, it'll be carnage for a while. The only tool we have is defederation and it's slow and borderline useless against spam or worse.