MacOS 27 Beta seems to actually fix a lot of my complaints with Tahoe. I had cynically been believing Apple was simply going to let macOS rot and not fix these major annoyances.
(Rather interestingly, menus still have icons if a menu option will simply launch another app, a specific folder that has an icon, or will perform a specific action like a window resize or category sort change that already has an icon you could click elsewhere.)
They also have cleaned up the mess of differently rounded borders (not complete yet but progress is being made). The OS also feels a lot less sluggish. I had gone back to Sequoia simply because performance was so bad.
The poor quality of macOS Tahoe is by design as it is a "transition" release - a transition OS release is often like a beta quality release (of some feature) and often features a "break" (like loss of hardware support or EOL etc.). It is meant to frustrate the user, so that the "next" OS release (which fixes all the bugs of the "beta" features is more "appealing" and hyped (just read all the comments praising the new release here and elsewhere :). Apparently Tahoe is going to be the last macOS that supports Intel macs - that means it will continue to frustrate Intel Mac users and force them to consider buying the Apple ARM models if they want to use the newer macOS. A similar thing happened with Catalina too after it dropped support for 32-bit apps - many people chose to remain in the previous version (Mojave) because it was less "buggy" / appealing than Catalina. Followed by the "hype" of how the next version (Big Sur) was "so much better". Microsoft also does this with Windows OS - e.g. Windows Vista and Windows 8 both can be considered "transition" releases that are infamous due to their "beta" quality features and / or frustrating UI features. (This tactic of boring and / or frustrating the viewers is more common in many popular TV series, where one or more episodes is often deliberately made that way - by focusing on something mundane and meaningless that doesn't really move the story forward, so that it makes the following and often climax episodes more exciting, fulfilling and enjoyable. E.g. Breaking Bad s03e10 - The Fly - the most boring episode of season 3).
(Rather interestingly, menus still have icons if a menu option will simply launch another app, a specific folder that has an icon, or will perform a specific action like a window resize or category sort change that already has an icon you could click elsewhere.)
They also have cleaned up the mess of differently rounded borders (not complete yet but progress is being made). The OS also feels a lot less sluggish. I had gone back to Sequoia simply because performance was so bad.