Dude might not be totally correct, but he's on to something else. The regular fans who carry a respect and appreciation for the bands catalog certainly exist, and yes, the latter group he mentioned - who long for TGA circa 2008 - are around as well, albeit in much fewer numbers, I believe.
But he left out two types of fans. One is the fan who has the ability to not like a record for reasons having nothing to do with T59S. The other is the type of fan who assumes that if you don't like a TGA release, it means you just can't get over the past and only dislike it because it's not T59S, and are thus making an unfair judgment and HOW DARE YOU SPEAK ILL OF THE GASLIGHT ANTHEM. This fan always considers his or herself to be a regular fan, but everybody else knows that they're...extraordinary (that's the polite way to say that, right?).