It was only once I got my M1 air that I realised that macos was not the problem, but rather how the computers were configured, shared between people and used. Eg I just share my shell configurations and tools with my linux systems, iterm is great, homebrew is pretty fine for me, tools like rectangle making the window interface much more usable. There are occasional issues, annoying security restrictions that you have to manually waive all the time, OS updates that break things, but at least it does not force you to update in the middle of you having to run something important like windows do. And the default macos office apps are lightweight, and decent enough that I do not need to some bloated office software. Work-wise, all the computational software I use runs fine, and only if I need to use intense and long parallelised computations I may use my desktop (or cloud). I am pretty sure an ipad or an iphone would run a lot of stuff pretty ok, if they were not limited by their OS and peripheral support.
In any case, the main reason I got into macs anyway was the lack of fan noise. I do not think I can go back to any other laptop that makes so much noise again. I share my office with others and get constant reminder how it sounds like. Heck I am playing BG3 on my M1 macbook air. I can't do that on a chromebook, and neither anywhere else without a fan. My friend has a laptop with rtx 3070 and it sounds like a jet engine when we play together.