I think your feeling about it being shallow is right, I remember seeing it mentioned in one of the reviews too that MBA M2 has shorter key travel (I think it was maybe Max Tech some video with 9 or 10 issues with MBA M2 or similar, I can't remember exactly).
Anyway, I'll get MBP 14", I considered MBA M2 for a long time as my next machine but it just feels much worse and overpriced with 16/512 against MBP 14". I think MBA M1 is better choice for the ones who need light and small machine. I had one, it was just so much more solid machine IMHO.