Given your observation, I'm guessing you have not used i3wm very much. i3 is extremely flexible and powerful. But as with most Window Managers, i3wm is geared towards those who prefer to build a highly customized environment. If you haven't already, this is a good read. https://i3wm.org/
Right on point ; I use it years ago as my daily driver in terms of wm, but never went very far in term of customisation. Now is maybe the time to look at it again, thanks for the link!