> Those will dry up soon enough.

We're talking about a pi replacement. The Pi 5 is slower than a 10yo laptop. That's gives us a very vast pool of used laptops.

> You also better hope the aliexpress dont figure out a way to get the RAM

That is a real worry and I can see used machines being gutted because selling DDR3/4/5 sticks is way easier and profitable than the whole machine. Adapters for SODIMM to regular DIMM are readily available and cheap, too.