I did say that in my post - I said he's not wrong - but the jumping to conclusions without knowing anything about me was rude. Even if you think those things, you shut your trap and keep them to yourself until you know for sure.
But you do have a degree in molecular biology IIRC? Regardless, at that stage he should have kept his mouth shut. Should things have progressed, one can only wonder to what other conclusions he would have jumped.