If I had to guess, it was probably Iron Liz. She's been quite vocal in her criticism of the site and the people on it. In regards to Doug not listening, I think someone needs to inform him that being the most well known person on set does not make him the talented person on set. Nor does it make him qualified to write for another person's character.
Speaking as someone who watched Film Brain (Yes, I liked his videos in spite of his dogwhistle of a voice) it annoyed me to see him being portrayed as nothing more than a bootlicking sycophant towards the Nostalgia Critic. If I had to describe his normal persona in the most diplomatic of terms, he's animated yet straightforward in his reviews. Where Doug for the idea to make him into his bottom bitch, I'll never know.