That's part of the difference, but another aspect of my opinion I think arises from what I think young gay men need - access to medications that keep them safe and that is where parental knowledge is crucial. Too many young gay kids unreasonably fear their parents' reaction and thus don't come out to them, while at the same time engaging in unsafe practices that they can't get protection for because their parents don't know about it. I see that as the bigger risk to young gay men that rejection or ostracism - maybe in the 1990s, but not today.