You've actually heard people say TRT fixes hair? I am doubtful because you can google that topic right now, "TRT effect on hair" and find an absolute abundance of reports that it does the exact opposite. Grows hair where you don't want it, loses hair on your head.

I feel really bad for anyone who is being served false info about TRT fixing hair on their head. If there's one confirmed possible downside, from what I can tell, that is it (there may be many more).

Google doesn't have big muscles, what would it know?

I kid, but only slightly: bro-science does not come from researching things on google or anywhere else. In theory it comes from personal experience, in practice it is usually made up on the spot or reverse-engineered from desires or self-interest.

I mean, I sort agree... My interpretation of "bro science" is a combination of some dude getting questionable advice from another dude at the gym, but also on Reddit.

That's effectively what I mean by "Google" in the bro science context. Even there you'll be hard pressed to find anecdotes from TRT supporters who claim it improved their head hair growth. I find a lot that note it increases hair everywhere ELSE but not the head.

Even the remote threat of being fact-checked does wonders to keep people from making up bullshit. I don't know that I've ever heard "TRT improves (head) hair" online, but I probably hear it roughly once a year in the gym. I work out less than an hour three times a week, so we are talking about a fairly high amount of presence for such a specific piece of bullshit.