I really think it depends on the posters personality. Some people like to argue/rant/spew and enjoy the opportunity to do so anonymously.
I personally have met several people thru this forum who I am still in touch with more than 6 years later. I don’t know all their identities but they are people I would never have met otherwise.
I met someone from this site for lunch. He brought his copy of that morning’s New York Times (which was his bible, lhavdil) and I showed him all the lies in any story of his choosing.