My only complaints about the 2020 MBA:
- Inability of booting from an external device as part of the T2 chip security sandbox restrictions
(even after I set the permissions in Startup Security Utility!!!)- Macbook Air 2020's purportedly do not support macOS releases prior to Catalina
2. comes as no surprise. As far as I can recall, hardware can never revert to an earlier OS than the shipping one.
Fortunately, despite all the moaning that Catalina is a dumpster fire (and I do believe these claims, because build to build things can wildly vary and I know Apple quality is a crapshoot), the shipping version of 12.15.3 which I'm not in a rush to move from, has been stable and working well for me...
1. - really? No T2 laptops can boot from an external? Guess there's another reason to keep my 2016 NTB which I already decided I'm keeping so I have a second computer, should I need repair downtime, or to boot into my Win10 boot camp partition which is loaded with home-brew, etc.
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if you're going to be doing video editing, hardcore whatever, its probably best to get a Pro. but if you're a casual user, I think the Air can work just fine. The keyboard alone is worth the upgrade