I don't get the meaning or context of the word "flaming"...? Must be a US thing, but I've never heard it used in relation to gay or trans*. Anyway, some people are, as Gwynne pointed out, crackpots. The only reason you'll need to worry is if they try to launch some kind of troll war against you. (I had that happen once over a non-trans* comic I drew! someone tried to assert I supported sexual assault because I drew an over enthusiastic, unexpected peck on the lips between two adults, sheesh. It's an age old comedy trope. Crackpot, right? Except they then started saying the most outrageous and libellous things. I fixed their wagon in the end but not before it stressed me out to the point of considering throwing in the towel.)