(PowerToys doesn’t do this by itself, you have to select every window in place if I’m not mistaken.)
As just one example—the dock is atrocious for a browser-centric workflow. I only ever have 2 "apps" open at a time, but I have 6 Firefox windows and 2 IDE windows, and remembering where I put a specific window (or even that I already have it open!) is a chronic problem. I know about right-click to show all, but the text that pops up is small (it's a context menu, not a first-class navigation element) and that doesn't help with the discoverability problem.
I'm sure that there are other apps to patch the other aspects of the system that irritate me, but if you have to install 4 third party tools to get something close to how good Windows is out of the box then I'd say OP has a good point.
Also you seem to be ignorant of a lot of features of macOS, like cmd-tab, focus an app, cmd-up arrow to show the windows of the app, and so forth. Or swipe down from the trackpad on a Dock icon to show the windows of the app.
Anyway, YMMV as always. Personally I find the window management atrocious not because of the way it was designed, which definitely works for me (and I hate the Windows’ one), but because of the bugs which they insist on never ever fixing…
It's not that I'm ignorant of these, it's that they're clunky for a browser centric workflow. The abstraction of an "app" is just plain wrong for the way that I and many others use computers these days, because one app (the browser) is home to most of the tasks I'm working on and already has its own second-level navigation in the form of tabs. The "app" layer means on Mac there are three levels of navigation to get to what I'm trying to do, which is too many.
What makes Windows (and most Linux DEs) better for the browser-centric world is that windows themselves are first class citizens—I don't have to pass through Firefox to get to GitHub.
This happens every time I unplug my laptop from external monitors, or plug it in to external monitors (even if they’re the exact same model and configuration as other monitors I’ve previously used). It’s aggravating and distracts me from what I’m trying to do.
Whereas I never have any issues on OSX, always find my windows where I expect them to be, and spend a lot less time moving and rearranging them.
The two operating systems do have different approaches to window management and to me it sounds like you simply prefer Windows, whereas I prefer OSX.
Development on Spectacle ceased[1] and it looks like the community may have rallied around an open-source program called Rectangle, which is open source. At least, judging from this single Reddit thread lol:
https://www.reddit.com/r/osx/comments/kazpcn/spectacle_alter...
[1] Although when I search for it now, I see an update from 2023 on softonic? Although the original dev's github repo for it hasn't been updated in years. https://github.com/eczarny/spectacle