On stream he did on yesterday (5/10, vod is now deleted), he started talking about his take on Mods and plugins in XIV in terms of how SE is handling them.
He and many of his chat members had disagreements on this, as most chat members obviously agree that mods and such are always against TOS and are more of a hush-hush thing.
More disagreements, Pyro gets pissed off, start flaming people in his chat, banning numerous people on an unhinged rampage, targeting individuals, iirc I even think I heard him call his chat "Dumbasses who pay my bills," but I may have misheard.
Long story short, Pyro lost his temper and got hostile towards his chat.
Him losing his temper and attacking his chat is nothing new, but this was a new level of hostile I've seen.