They're frustrated because they aren't accepted by society. Sex is the scapegoat, but really they want human relationships. They have no quality relationships so they pretend that people don't deserve compassion. They have no power, so they publically display their power fantasies with each other.

Unfortunately, the internet has given them a cesspool to swim in, so they're stuck in a psychopathic echo chamber. To the point where good advice is scoffed at. They'd rather listen to the antisocial psychopath, than the person who lost their virginity at 25 and is trying to give back, because they believe the 25 year old must be in a radically different situation.

It's really an internet age disgusting phenomena. They would normally either be forced to socialize and conform, or become shut ins, but now they have a tribal safety blanket. There are actually some people on there that aren't as bad, but the sub works hard to radicalize them.