They absolutely should have instantly pulled out the moment the racism began. I will not disagree with that in the slightest. They mishandled the fuck out of it once they were in there. I'm not against action being taken. I'm for second chances when I personally believe it was a mistake. Based on the information we have available I feel they clearly did not do diligence with researching the website that they decided it was ok to host an AMA on. I accept their apology and will move on, but not forget this. Not everyone, or many will agree with me and that's ok. I take an apology as an apology and hope that things were handled internally. I do not need a public execution for this.
Now if it were to happen again, I would be right beside many of you asking for heads to roll. Despite how it may seem to you, I actually have a very low tolerance for this shit myself and I'm not defending THQN because they publish a lot of titles that I like. Rkelly makes a lot of music I loved as well but you won't find me listening to those songs anymore. I have a brother who is in jail for child pornography, and not only have I washed my hands of him, it's difficult to even admit I have a brother to people. My saving grace is we have different last names. Not only do I not want to be associated with him, I don't even wish to hear his name.
The people doing the AMA's responses to the posts show it was more than an accident. One does not respond to posts with pictures of knights and homophobic slurs with 'Hey that could be from one of our upcoming games!' as well preface the entire AMA with a twitter post of (specifically the bolded part) '"We're doing an 8Chan AMA and we have no idea why. Come join us!" without knowing exactly what you're doing before hand and on some level be okay with it. Like, if that tweet was just 'We're doing an 8Chan AMA!" fullstop, then maybe, just maybe that branch of THQN and the top level exec who took part in the AMA are just truly completely incompetent and shouldn't be running a company, but aren't terrible people. Maybe.
But 'we have no idea why.' is the verbal equivalent to promoting the fact you're going to be sticking a fork in a socket as a full grown adult. You know exactly what will occur if you do it, but you go ahead and do it anyway. And on top of that they stuck around and interacted.
Their followup has been their way to avoid any blame or public consequence. It seems to have worked for better or worse, since most press let them go with barely a slap on the wrist.