That is the "does nothing" argument. But compared to Bitcoin, having a general-purpose [0] ASIC seems like it'd make the network less secure - if someone wants to run something like a 51% attack against Bitcoin they first have to buy a ridiculous amount of specialist Bitcoin-only hardware that will potentially lose all its value after a successful attack. Also probably be a lot easier to track who did it.
Monero the equilibriums are less obvious. Does that matter? No, I don't think so, I still own a certain amount. But it isn't a helpful axis to experiment on and I don't see where the upside is meant to come from vs just going with sha.
[0] Edited, was special-purpose.