Do you think the best doctors are the ones who go into the most lucrative paths, like cosmetic surgery in Beverly Hills? You're deliberately strawmanning. The equivalent statement on the other side would be: We should 10x doctor pay so we only get those people who are in it for the money. That's a disingenuous stance as well. Let's not pretend that "slightly below market rate" for specialized fields leaves people in the poorhouse.

My original point was about achieving a balance to avoid hiring mercenaries. I think that is important in domains where ethics matter and ultimately leads to better long-term outcomes. When people defend the pay aspects being the best motivation, they are quietly telling us about their own (anti-social) value system.