Real answer:
Moderating a porn forum is a lot of work for volunteers, because if they fuck up children can get hurt and people can go to prison etc.
Porn boards should be private with paid subscriptions to pay moderators.
Or public utilities. That’d work too.
The rest of the big tent won’t call themselves leftists either. They’ll say they’re “”“progressive”“” instead.
And if the progressives get too uppity then AIPAC or some other rightist faction will get rid of them.