I still haven’t upgraded from Mojave to Catalina because of serious bugs reported by other people (including data loss issues in Mail). I’ll see if Big Sur shows improvements (reported by others) and decide when to upgrade. I don’t even run beta versions of macOS point updates, which is in stark contrast to iOS betas, which have been of better quality (comparatively).
Edit: Apple seems to be ignoring long term Mac users (even the vocal ones) for quite sometime. It was poorer hardware quality and lack of hardware updates for several years. Now it’s software, where it’s been going about removing what makes native macOS experiences great. The Catalyst apps are not “native Mac apps” by any stretch of imagination.