Absolutely disagree.
Freeing people to work on things they desire will mean that undesirable jobs (such as the ones you describe) will have to increase pay and conditions to correctly reflect the job's undesirability. To me, that's an awesome result!
In the specific case of being a doctor: it's possible (but unlikely) that desirable jobs such as doctors may have to take a relative paycut to cover other expenses.
I don't see that as the worst thing. Doctors deserve to be paid according to their skill, yes, but at the moment have entrance requirements which are disproportionate to the job at hand. This effectively limits a desirable career to the already-privileged and means the system is not necessarily accurate at identifying the most skilled candidates. If poor, skilled people are more securely able to fund themselves through medical school, that would also be great!
