I still don't quite see your point...?
The point I made to you a few posts above was: it is not a matter of conservative politics, or the stigma a gainst porn, which is necessarily going to be all-important in someone's reaction to discovering their parent is a pornstar.
I stick by it. Simply saying 'so what?' is not a very compelling counter-argument to it.
But I think it certainly IS about stigma against porn. If there wasn't this stigma, parents would be less likely to hide their profession from their children, which means they probably wouldn't just stumble across their, er, body of work and be horrified.
Furthermore, if porn wasn't stigmatized people would be a lot less likely to care (or make fun of you) if they discovered that one of your relatives/loved ones was in porn.
I actually think that so what IS a compelling argument. We have to consider WHY we find certain things grotesque or unappetizing because, like I said, that's been used to justify all sorts of bigotry.