There are some sites who are less extreme and which moderate violent comments, but I have visited no site that would provide real kind of psychological help for those men who suffer in loneliness.
This is a very dumb statement. You can’t provide psychological help to people who don’t actively seek it. You can provide psychiatric care against people’s will if you have them committed. But you can’t provide “real kind of psychological help” to strangers online who don’t think they need such help. You can’t even provide it to dearly beloved people you know very well in person. Only qualified professionals can provide such help to people who ask them to offer this service.
Another thing: people who don’t think they have a psychological (as opposed to a psychiatric) problem don’t have a problem. “You have a problem because your behavior bothers me” is a nonsensical statement. If you are bothered, the problem is yours. And you can either remove yourself from the interaction or accept the situation. Because you can’t “cure” somebody else.
As for the rest of the post, “women are horrible” is as popular of a narrative as “men are horrible.” The absolute majority of people who engage in it don’t harm a fly. Venting about these feelings either in oral conversation or in writing is actually a good thing. If a person is not inclined towards violence, no amount of angry websites, violent movies or video games can “make them” violent.