Maybe I'm too old and every modern computer is a marvel to me, but as someone switching between win/macos/linux all these complaints amuse me. While in windows I'm using powertoys and I can move/resize windows using any space inside a window. It's the same with linux/gnome - a couple of config settings. Then, when I started using macos I looked for a similar solution - found BetterSnapTool and just started using it.
yes, looks like BetterSnapTool and rectangleapp have some overlapping functionality https://folivora.ai/bettersnaptool
I guess I found BetterSnapTool first and it solved my issues with window management in macos.
Wait which powertoy does resizing and moving of windows? I've been using AltSnap while still having powertoys installled for changing caps lock behaviour.
I get your point and think it is a matter of when things are relatively "perfectly" done as in iOS/MacOS, every little anthill seems like an eruption volcano, but let's also not make excuses for some of the rather disgusting issues in Tahoe that Steve Jobs' would have never allowed to ship.
I can't recall them all right off the top of my head, but I waited til 26.2 to update because of all the comments I saw about glitziness, and this resizing issue is just one of the quirks I have noticed are still not resolved; not to mention that my M4 Mac has not crawled and locked up as often as it has since I updated to 26.2. But again, to put it in perspective, that's only been very little hassle compared to what seems to be nothing but misery, suffering, and existential questions suffered by the wretched souls condemned to Windows.
Edit: another issue I have noticed in iOS is that now things like saving bookmarks in Safari is no longer a two step/tap process using long-press, it's a three step/tap process....WHY?? Same with "add to home screen". Also, the long press horizontal context menu (i.e., copy, paste) now does not slide left to reveal more options, it just changes mode to a vertical list. What is going on??? That's sickening...in my opinion. Horizontal, vertical? Pick one.
Second Edit: I just experienced another Tahoe glitch in at least Safari, where hyperlinks become un-clickable and the only way to resolve that is to seemingly restart safari. I don't find that acceptable in Safari of all places.
I was just reminded of another glitch in iOS, when typing if you select the left most suggested word, the selection highlight is not only aligned with the rounding and position of the underlying rounded background, it literally overlaps/extends beyond the background. Again... rather gross.
Not sure if it replaces everything, but I have been using https://rectangleapp.com and would not be able to use MacOS without it.