Don't agree, the fields no one wants to do anymore are EM, peds, FM, and general IM as seen in the ERAS data trends.
EM and peds do not have bright futures, FM has concierge medicine, but with less effort you can make more in surgical subspecialties, rads, derm, GI, cards, heme/onc etc. Along with the explosion of new and evolving EMR reqs and the inbox, there's a reason certain fields are competitive amongst med students.
In concierge, yes, but still far and few between and can get over-saturated very quickly. And even so, they still make less than the competitive fields out of med school
More to radiology than that
Concierge radiology is becoming a thing (whole-body MRI for XXX), also rads has only expanded residency spots by 14% since 2000 leading to a massive shortage, can strong-arm hospitals and insurance- other specialties with shortages like GI and heme/onc can do the same.
There are jerks in every specialty
Edit: Also even if all USMD students don't want to pursue EM, FM, peds, gen IM, those spots will be filled by IMGs or weaker DO students, which prevents any supply/demand correction.