Instead, it was Biden who squeaked out the victory with <1% wins in three critical states. Oops, totally wrong and should be ashamed of myself.
You shouldn't be ashamed of yourself for getting a call wrong. You should instead be ashamed of yourself for the fact that your self-chosen role on this forum is to roast the polling industry and Atlas liberals for their miscalibrated psephology, but then get hyperdefensive when given a taste of your own medicine and get called out on an incorrect prediction.
I am a defensive person in general, but if you interpret me to be hyperdefensive when I point out how wrong I was in some aspects of the post, then it's not worth arguing over. Especially considering in this post I was shotgunning an election two years away, I am more than willing to call out my own predictions that turned out to be false. I will and do have opinions about why certain things are wrong though, and defensively go after those who are launching smears and character attacks for thinking differently. I will not cave or apologize to that mob mentality, especially when there are many, many posters who are far more aggressive and militant in their approach than I am (they just happen to all be of a certain ideology). Also, my 'role' here isn't meant to be a role and isn't set in stone. If others would like to join me in calling out groupthink that would be welcome 
Except neither of those are at all what IBNU/Liberal Hack was doing with their initial reply, so by the logic of your own standard which you just set out here, your "defensively go[ing] after" their reply wasn't necessary, yet you chose to do so anyway & in an evidently "hyperdefensive" manner. So, y'know, maybe forgive us for thinking that you were quick to "get hyperdefensive when given a taste of your own medicine" when that's seemingly exactly what you did here in this thread.
