He was in a feud with Lucasfilm a year or two ago with that Vader fan film he did and made a big stink about it. He's had more than one dust up over nonsense on Twitter. He's not a shirt stirrer or anything, just super dramatic about everything, especially in how he chooses to respond to things. I don't dislike him and do enjoy some of his content.
Pablo has been a PR liability for Lucasfilm since even before the Disney buyout but it has only gotten worse as he's gotten older and crankier. He legitimately detests Star Wars fans. He set his Twitter to private for a reason.