The articles are about Cuban doctors complaining about their working conditions and compensation as they are sent abroad. You used them as a way to answer your parent, who’s central claim was that that it is a well known fact that Cuba’s health care system is good actually. They provide the fact that Cuba exports doctors as an example of how successful their healthcare system is.

To me it sounded like you were using the fact that doctors complain about their working condition as evidence against parent’s claim. So it felt natural to explain that a healthcare system can be successful despite the fact that the workers in said system have complaints about it.

Ideally these workers should be paid a fair share for their labor (particularly when their boss—the Cuban Government—claims to be a socialist). But regrettably that is not the world we live in. I wouldn’t be surprised—if the numbers were crunched—that a doctor employed by a for profit hospital in a capitalist country also only received a tenth to a quarter of the profits they generate, after their bosses take their profits and their governments take their taxes.