I'm a chem PhD myself. BS was in Biochem. Yeah, there's no excuse for that, none at all.
(I ended up out of the lab, working as a tech writer among other things, because I explain things well, apparently.)
Don't post them all at once... I'd put up the one about that poor grown man first, in one place only, and not say anything, just let people read it and assimilate the fact that this is serious stuff. You can save the other two for follow up / email links if someone still gives you a hard time after that. Low profile on this, you don't want people to feel they have an excuse to criticize you for standing up for yourself. You're just providing info.
I'm sorry you have this to deal with.
_________________
"I believe you find life such a problem because you think there are the good people and the bad people," said the man. "You're wrong, of course. There are, always and only, the bad people, but some of them are on opposite sides."
-- Terry Pratchett, Guards! Guards!