Edit:
For context the thing you linked says UK medical residents (in US language) make $36k/year, and the median household income is also $36k/y[0] .
In the US the average non specialist income is $60k[1], and the median household income is $69k[2]
This tells me things aren’t out of whack.
They also say 40% of residents in the UK want a different job. But residencies are temporary. In a few years they will have a new job - a full doctor.
I’m not saying there’s not a crisis, but that sheet doesn’t explain to me what the crisis actually is. They seem to be doing on par with US residents.
0 https://www.ons.gov.uk/peoplepopulationandcommunity/personal...
1 https://mededits.com/residency-admissions/residency-salary/