SUPER HAPPY with my MBA (fastest Mac ever!).
Things:
1) Silent click does nothing. Still producing a clicking sound; maybe it is normal. Not a big issue. WORKAROUND: I can tap instead.
2) My photo stream does not work. I tried many things, rebooting... It's enabled but no photos. Works in all other devices, Macs and iPhone/iPad. Go figure. WORKAROUND: I found none. Waiting for a fix (I'm on 11.2.1).
3) External monitor resolution not supported. Strange thing happened: I plugged an old DELL 24" using DisplayPort and it worked perfectly well (right resolution) immediately. But I noticed that it was not set to Default for Display, it was Scaled but... no resolution selected there, and the right one (1900x1200) was NOT even in the list. As fool as I am, I tried them all (none worked well, of course) but then there was no way to go back to the good one. WORKAROUND: SwitchResX. Hoping for a Big Sur update to fix this.
This are all minor annoyances. The worst is Photo Stream. Anyway, the machine is superb. Still getting used to the keyboard, but I think I will. SSD is superfast (2800+ MB/s) (1TB). Sound from speakers is so-so, no big deal for me either. Smaller than my previous MBA. Camera is not that bad. All software works. It's a keeper.