I'm jealous of you and others in this thread that shared this path. I've unfortunately been dragged in the other direction: I was a happy i3/Linux user and now I'm coping with a multi-monitor Mac setup which stubbornly refuses to support workflows which I find to be very fast and efficient.
There are some tools (all $$) for Mac which attempt to replicate a tiling WM but Apple's support for it is extremely poor, affecting the quality of the tools.
I'm no longer using a Mac (for employer reasons), but I had a lot of success with Yabai (free/open-source) before I switched. https://github.com/koekeishiya/yabai
I haven't disabled SIP yet. As a Mac novice, I'm wary of breaking something required for work (and in a pandemic WFH to boot) that I can't fix. But it looks like it's optional.
There are some tools (all $$) for Mac which attempt to replicate a tiling WM but Apple's support for it is extremely poor, affecting the quality of the tools.