He should have said they are not proven. Who really knows if they are false, apart from Lloyd himself, and possibly a few others?
Yes, I don't think anyone has said "Lloyd definitely met up with an underage girl" but rather that he's been accused of that and the accusations are credible in that some purported evidence has been produced and it aligns with his own admission in his book about sexting "girls" and subsequent behavior and admission that he can't control himself sexually.
I would guess only Lloyd and possibly his wife and the relative that is apparently behind the allegations can know for certain, no one here can say for sure either way, the police would need to investigate and we know all the information has been handed over to them.
There's the same lack of ability for anyone else to definitively declare it "false", unless it is a hoax and they are behind it or party to it.