While celebrities are unlikely to decisively shift whom many people choose to vote for, their endorsement of a political candidate can still help shape an election.
Maybe his endorsement pushes them away from Trump? Idk, though, I've met some right wing young people that I wouldn't be surprised to learn listen to his music or at least follow him on social media. This idea that millennials, zoomers, and gen alpha do not have significant amounts of far right assholes is deeply misguided.