On windows at least, I almost always use 'alt+space; x' to maximise windows, as well as winkey+left/right/up/down, which is really the only resizing I do. Having to use the mouse is a pain.

....with a keyboard? on macos I use Rectangle, on linux I just use the built-in resizing keyboard shortcuts

"I downloaded a separate application to make resizing windows easier" is not a point in favor of MacOS's window resizing decisions.

True, but macos x has never had good window resizing decisions.

I never said macOS has good window management.

I use rectangle on my mac for window resizing and generally keep most windows in the sizes that come by default with that.