He probably has no need to pay them any money because either he sold or gave up any future royalties.
I am sure this is just his RAT family griping because they want to make sure their Hollywood friends don’t think they went MAGA or something.
I just hope can keep using the song whatever it takes - it’s perfect message: “Hold on - I’m coming!”
If he has to pay them off I agree it’s not fair - but then neither is having to pay Stormy Daniels hush money to keep quiet about something that never happened.