Since there's a byrne defender here, I wonder. . .
Paul isn't so much a Byrne "defender" as he is a Byrne denier.
He doesn't defend the man's actions. He claims the interpretations of those actions are exaggerated or even in some cases made up, by people who have agendas. What he calls "detractors."
You pretty much nailed it on the head, but allow me my own interpretation (or rant), if you will...

While I am certainly skeptical when it comes to most detractors & their exaggerated stories, I deny
mainly the levels of vitriol & attempts at degradation & like-minded detracting tactics...which is why
detractor is such an appropriate term for most naysayers.
Take Stephen Bissette, for example, who is most definitely NOT a detractor. While I certainly agree that JB has a massive ego, it is NOT an unhealthy one (and I base this ONLY on the many MORE positive accounts & interactions reported).
When Mr. Bissette recently threw out the term egomaniacal demeanor, followed shortly thereafter with
an accusation of behaving abominably toward fans (and mighty young, vulnerable fans at that), I find cause to remain skeptical about the LEVEL of the experience(s) only because of the many MORE positive experiences that have been accounted by others. This is NOT saying that Mr. Bissette is lying, by any means. And if anyone takes it that way, then please realize that it is NOT my intention to actually accuse most of lying (believe me, or don't, I will state emphatically when I believe someone to be a liar).
Then you have Charles Reece...whose posting proclivities in the past, regarding the REAL subject at hand, has proven to be quite biased. Consequently, my skepticism goes into high gear.
While Joe Lee summed it up rather succinctly & I did not, it pretty much all boils down to that.
I've tried, in the past, to impart to the more stubborn individuals, that I don't agree that exaggerating (even for effect) is the way to go. It's one of my pet-peeves & in my own biased opinion it is a positive pet-peeve to have.
I question the illogical nature of it all. Those that create these exaggerations get highly defensive about it &, in a certain way, I don't blame them because in many cases they seem to believe what they are writing about, to the exclusion of logic in most cases.
I may get immature at times & resort to name calling, but my goals are usually positive. Can the same be said for most I call detractors? The
honest answer would be "No."
Some feel the need to question WHY I continue to react to these exaggerations time & time again. My answer is: Why not?
And some may ask...Why ONLY at Comicon? My answer is: Why not?
Seriously, though. I use to haunt a few other forums, but when I decided to narrow down my Internet time so I wouldn't neglect my family (I know, I know...I'm just self-centered that way), my Internet travels to certain comic book-related sites came down to a few. For the most part I don't interact all that much elsewhere, but here I am compelled to react. I don't know why...it just is. The detractors that lose sleep over this will just have to suffer.