My thoughts on the matter are basically this:
Phil Fish acted really stupid today. No doubt about that. But Marcus Beer also went way over the line with the personal attacks too. He said some really rude and hurtful shit with very little justifiable reason to do so.
Phil Fish is an A-hole sometimes, no doubt about it. But this hivemind internet hatred toward him is crazy and pretty stupid too. Most people don't even get the full picture before thinking he's a complete A-hole or something. People don't get the full picture from stuff like "Suck my dick and choke on it" - which was said to someone harassing him on twitter, nor about the whole "Japanese games suck" story, where he explained his position well beyond just that one quote and later apologized to the person who asked it, who accepted his apology just fine.
They also write off all of the harassment he gets daily on twitter and through other sources, and write off any harassment he gets from people like Marcus Beer with "HAHA well Fish is an A-hole, he deserves it!" And that's pretty gross, honestly. Yes, you have to try and ignore the idiots who spam hateful shit to you on twitter, but it can definitely be a hard thing to do sometimes.
Phil Fish acts like a dick sometimes, and that's his own fault, but it's pretty gross that people are so...vitriolic toward him. If you ever look at a lot of the shit that gets tweeted at him daily it's commonly a hundred times worse than anything he's ever said. Does he bring that on himself? To a degree he sure does. But man, the hate he gets is so, so caustic and in such huge numbers that I can see how it would affect him.