Trump will gleefully throw him in a special prison as well.
In a normal situation, making an endorsement would not require risk. I commend The Boss and all the other celebrities willing to risk prison or death to make a public endorsement for democracy in this election.
Honestly, couldn't care about these actors or singers endorsements and I don't think they will change many peoples minds (I don't think swifties are the type of people who would vote for Trump)
It's probably more important to the right wing for endorsements by large business owners, the science community, industry and religious leaders
For morale, endorsements from large furniture stores would probably have the biggest impact for JD Vance
The right wing tend to care more about making money, so endorsements by musicians might not matter much