Trainers on the internet

Is it me but I just don't get all these trainers who spend what seems like ages online and they seem to be everywhere and all they do is pick holes in the other online trainers.

Occasionally they throw a curve ball and we get a bit of a love in and A who previously had nothing good to say about B is now their newest and bestest friend.

So is the internet driving them crazy or is it because they are already crazy and ego driven they spend so much time online getting their egos massaged by their little band of devotees?

It isn't as if it is the the odd one I could name several some of whom I've had lessons with.

Weird.