It wasn’t a claim it was an anecdote, it’s a mismatch in communication expectations and I understand the confusion. I stand by my lived experience and expect it to be treated as nothing more than it is.

That being said you shouldn’t look for rigor in social media or get your facts from there if you treat the comments as you seem to, which is to say expecting scientific rigor that’s bad practice. If I was making such a claim I would link to a primary source but again the is a casual conversation on social media. I think you expectations may be onerous for the medium.