Honestly, just as I don't think there's any positive outcome to amp or other gear manufacturers getting into debates with forumites online, I don't think there's really much to be gained from Bonamassa posting this kinda thing online either, but he's entitled to say whatever he wants nonetheless. I think he's a great player, and has great tone, but truthfully don't listen to his stuff that much. He did a clinic at MI awhile back where he basically just ran through his massive rig. The guy would sound 99% the same if he just played his Jubilee all night IMO. That's not to slag any of his other gear, just that it's mostly his playing not the gear, as it is with most people IMO.
I don't hang much on the TGP, but think there is some of the same mentality on all forums in the end. There are some GREAT players on here, and I really do enjoy listening to some of the clips/tracks they post. But there are also the guys on here/HCAF/TGP etc. that own a ton of nice gear, think their opinion is divine, and either never post examples of their playing, or they do, and sound like beginners. It's not the end of the world when that happens, though

And I dunno that Bonamassa should bother worrying about those kinda people, but sure, they're kinda asking to be called on it at the same time, I guess.
It's just the nature of anonymity in the end. None of these guys who've never been a pro musician in their lives would have the gall to say any of this kinda thing to Bonamassa (or any other pro) to their face.
They know it's bullshit on some level, and that if they went head to head with him in a jam they'd have their asses handed to them so hard they'd be in tears. But from the safety of their homes it's really easy to talk shit and pretend you're an authority because they own awesome gear, etc. I think in the end, pro guys shouldn't really worry too much about what some guy on a forum says, but that's just my .02.