Reading the full thread it seems everyone walks in eggshells around him, speaking so sweetly to him while he insults them and their work.
Reminds me of breaking rules as a child and then justifying it by saying that a friends mother said it was okay, or asking my dad about something my mom had already forbidden...
I can see how that is frustrating from his point, when he made it clear multiple times and is basically reiterating it that whole thread, until in the one of them even thinks of a solution.