Odds are if he left there's the possibility their compensation situation might have changed for the worse if not leading to downsizing, that in the edge of a recession with plenty of competition out there.
You got a point in the optimization part, it's difficult to compare both chips when you're running on completely different OSs, specially when one of them ruins a specially optimized OS like ios
The closest it could get I think would be running a variant of Unix optimized for the Ryzen.
Not all the keys can change and the ones that can't are all Mac ones which limits the adoption of Windows users which like it or not are still the vast majority
Many who used to have a PC now have just a smartphone but the problem is that phones are modeled to be consumption devices, not for production. Even pro/highend mobile devices lack the ability to compete head-to-head with an actual laptop/macbook because the underlying OS is limited in scope by design.
TL;DR: you were never meant to do work on a phone, just watch stuff
>but on most things there's almost no difference between they and Aliexpress. I can buy the same products from Aliexpress way cheaper and have them delivered in 2-3 days.
That's what a lot of FBA vendors are, middlemen. Some Chinese companies learned about this and are now doing FBA directly.....but the quality is the same and so are the prices.