I don't see it that way. Sexual stuff is by definition titillating, so everyone is interested in it. But, "worrying" is a different level. When I hear something sexual, I am interested. But if it is two (or more) people who are able to consent to whatever they are doing, I'm not the least bit worried about it.
And, as far as Swift brainwashing young people into pegging or whatever. Well, I highly doubt it, but if she is, so what? Or, are we going to say that adults should not be able to use tactics to brainwash young people? Because, that is gonna get a lot of Sunday School cancelled and youth pastors fired.
Of course, what he is really saying,"Only I and people who think like I do should be able to brainwash them."