This is an entirely different context - most of the talk here is about LLMs, health data is entirely different, health regulations and legalities are entirely different, people don't publicly post their health data to begin with, health data isn't obtained without consent and already has tons of red tape around it. It would be much easier to obtain "well sourced" medical data than thebroad swaths of stuff LLMs are sifting through.

But the point still stands - if you want to train a model on private data, there are different ways to do it.