It comes down to two mismatches: first being the famous person's own patience, which is just a normal amount, but instead of usual number of others going up to them now it's 100 or 1000x the number of others.
The second mismatch is the information asymmetry: the famous person him/herself knows that they have gotten 100x people going up to them and saying / asking the same thing, and they know that they will continue getting this for the rest of their life, so they respond with annoyance, which is completely understandable. However, the average person going up to them isn't gonna think that many logical steps and realize this; they're just saying "oh cool, it's a celeb, I never see celebs. Let me try to talk to them!"
No, I did not try "this one weird trick that doctors hate" and I'm not going to. I'm going to do my own research, I'm going to speak with medical professionals and specialists who understand the MOA of the treatments they're discussing (and what "MOA" even means) because I'm an adult, thanks.
To anyone saying it's not rude: It is when it's just "have you tried X?" because, who the fuck are you? Are you a doctor specializing in my disease? Are you also a sufferer of my disease? Are you a caregiver for someone with my disease? No? Then go away "dude who read something one time".
You want to wander in with unsolicited medical advice, you need to show me that you're not just the same losers I've dealt with my whole life saying "oh man, I have a migraine" when they mean an extremely bad stress headache. I assume everyone with chronic illness has had the same well-meaning gibberish.
It's great that you want to connect with me, but weird that you want to do it about my disease. It might even be a good discussion. But it never is if the lead is "have you thought of this?"
That’s a bit hostile. I happen to have been following research around beta-carbolines for almost two decades and am curious whether clinical practice follows that research. My replies may be curt simply because I am writing on a mobile device.
It is interesting that you should decide to die on that hill, when the parent poster clearly did not have an issue with my question. It was neither directed at you, nor did it concern your disease.
Are you certain of your own motivations?
Are there any studies with results showing this as a suitable way to reduce tremors?
See e.g. https://link.springer.com/article/10.1007/s12311-015-0751-z