I only use windows at work rn so I don’t really get into the guts of it much. It works well enough most of the time but I’ve had to adjust and most of the adjustments are dealing with annoyances like the start menu. I also can’t just install arbitrary apps to solve all the issues. I appreciate the points you’ve made but I’ve largely found the usability of this OS to be meaningfully worse than Windows 10 and incomparably worse than my recent linux experience.
Can also grab a PCB + case for a 60% if that’s up your alley. Not exactly a kit but you can definitely put the parts together. Note that if you want more than a 60%, most PCBs and cases must go together.