It's not just Tahoe though, there have been more and more UX papercuts over the years.

Here's an example of one such UI regression, that started with Big Sur and now got slightly worse in Tahoe (written by someone who is very knowledgeable about macOS): https://eclecticlight.co/2025/06/15/last-week-on-my-mac-fide...

Is cropping PDFs to rounded corners (without a way to disable it) enough to get someone to switch to another OS? Probably not, but it's still IMO a UI regression regardless.