Do you even know what that means? How exactly is reporting allegations made by others libel? You know you'd have to prove that the statements are untrue and (since he's a public figure) you'd have to prove that the people making the claims knew they were untrue at the time right?
No it isn't. Reporting on allegations and other newsworthy topics is literally the joirnalists' jobs. They aren't liable for libel or slander as long as they are reporting in good faith. And almost by definition reporting on something someone else said is in good faith as long as you think that they think it's true.
Firstly, it cant be slander as that only applies to verbal communication. Secondly, if you read the article they refer to him as a predator based on these allegations. They are reporting these allegations af if they are facts. At this point it is just defamation, but if it goes to court and we find out there isnt a case then it becomes slander. Theres no way someone can call someone a derogatory term in good faith.