I feel sorry for Patrick. He's a gifted guy, a really talented musician/songwriter. Unfortunately, people = shit. No matter how great you are, there will always be people trying to pull you down, being negative. I hope he realises that this is part of the industry he's in, and that every artist goes through this kind of criticism.
He is a talent that should never walk out of the spotlights. And it doesn't matter if it's with FOB or on his own.
I don't know if anyone has already seen this, but it's a pretty good response to Pat's blog, by Brendan Kelly. It's worth reading if you are interested in this