Aranging windows is not a "power user feature". It's a basic thing that all other desktop OSes have. If you think hotkeys are "power user" things then replace them with gestures. Mac has none.
They actually do have windows splits, it's just unfortunate that they force a workspace onto them.
If anything workspace is a power user feature. Many including myself rarely use it. I could not if I wanted to because it looks so stupid on an ultrawide monitor.
To me the fact that 2 basic things: window snap and window switch hot keys (dont tell me you can switch apps, then swicth windows, it's retarded), don't exist, and I need at least 2 other apps to make my computer bearable, is ridiculous.
It's luckly that the apps happen to be free no thanks to Apple.