RDM won't really fix the problem. If you make the resolution too high things will be too hard to read on the smaller display.
The MBP are more powerful machines and some people might get value from that. But for the majority of people, the M2 is more than fast enough. And some people will find value in the bigger display and be better off with a MBA 15 or MBP 16.
All I'm saying is if your gonna recommend someone looking at the MBA 15 get the MBP 14, make sure they are okay with going back to a MBA 13 size screen.