Calling someone you do not agree with sexist, racist, bigoted, stupid, ass and any other insult you can conjure is not an argument! If you disagree, argue the facts, the ideas, the principals, but if you cannot do that, SHUT UP! Insults are simply escape clauses, declaratives that you are unable to form a point, a reasoned, sound argument. Go down fighting, with an argument, not an insult. And at this point, we, the insulted, have become fairly impervious to your insulting barbs, but if that is the best you have... We win again!
Yes, it is not fair that some of us are smarter than others, but that is something you will have to take up with whomever you deem the creator. Though you could throw an insult their way, which would be much easier and may be the limit of your capability.