He should run for Senate or something....
Maybe in the 2030s.....
If people want athletes and entertainers to have a "platform" then don't be surprised if they want to run for political office.
Very few people have a genuine principled opposition to athletes or entertainers going into politics. What people object to is when they import a style-over-substance ethos from their previous field. Entertainer-politicians who avoid doing this can end up quite well-regarded, as indeed Schwarzenegger still in is some circles.