A lot of his fanbase are pedophiles, including fairly high-up "lieutenants", and he's acknowledged it a number of times. They barely conceal it, that ice snowflake symbol and the term 'p are just dead givaways. He doesn't appear to really be a pedophile himself though.

I think there's a much simpler explanation than him being a pedophile, it's just meta post irony. It's exactly the kind of thing that would appeal to the young disaffected right-wing males that make up his base, he can say and do wild things and it only makes his charisma with them stronger. It appeals to the pedophiles in his base, but everyone that already likes him isn't going to be put off by this. Making light of the situation like this might even gain him anti-pedophile followers, oddly enough.