No-one (certainly not Call Me Dave) is saying that many gay men are paedophiles. But there is an obviously irrefutable case for saying that men who sexually abused boys in the seventies were indulging in homosexual acts.
Part of the problem about society in the seventies is that there was still massive pressure on gay men, particularly those in public life, to keep their sexuality out of the eyes of others. This drove people into a world of sexual activity where secrecy had to be assured and blackmail avoided...