Earlier quoted context omitted.
Can you characterize the deterioration more specifically? I only ask because every time I run this exercise for myself I end up back on macOS, despite any hiccups.
If you have not tried it this is an absolute game changer for Mac users moving to Linux. https://github.com/RedBearAK/toshy I've been running it for 3 years now. I am so macpilled that I had to install it on my new Framework 13 pro. The Mac muscle memory was always my biggest hurdle with Linux. I always felt handicapped by it. But Toshy eliminates that.
As a recent Mac-> Windows switcher for work, my productivity has nosedived partially for keybinding confusion. For instance, I instinctively reach for Option+Arrow keys to jump the cursor over words, which mapped onto the Windows keyboard is Windows->Arrow, which moves the whole window around the desktop into predefined positions. Cool feature, but my muscle memory for the other thing means I'm always screwing up window position (and never thinking to use it on purpose).