It's a great site. He (Wally Fay, aka Tony Raphael, aka?) only post sporadically these days, unfortunately. His book on La Eme is worth a read.
I’m not sure that 99% of those commenting are gang members. There are a lot of comments that suggest they are law enforcement posing as gang members. The truth is probably somewhere in between. I’m sure it’s a mix of law enforcement, wannabees, internet gangsters, fans, etc.
A couple of the posters, PepsiMan for example, are obviously the real deal. Wally Fay has a lot of Eme contacts and would likely call out PepsiMan if he was posting BS, but instead he lifts them out of the comments and posts them on the front.
The other point is that not all gangs answer to them. All Sureno gangs are supposed to pay taxes to the M, but there have been notable gangs (Maravilla) that refused to pay. I don’t know if this still holds.