We are a democratic country, people are free to strike, and it's a good thing. It's a bit annoying sometimes, but it's certainly worth it (I'm sure there is no strike in north korea, but I'm happy to live in a free country with that minor annoyance)
They are also fully automating more and more lines.
This stands in stark contrast with the USA where the AMA calls the shots. In effect, the doctors control the supply of doctors.
Simply increasing the number of medical school places would result in many people spending years of their life (and in the US, 100s of thousands of dollars in debt) without then being able to then start their career.
Some degree of central planning seems reasonable here.
You have to remember that in a well working labour market strikes are a last resort, and 99% of the time having a strike as a tool helps the labour side wield their fair share of collective bargaining vs the dominant position of the employer organisation.