He should get on with his life. Try to avoid being a poster boy for causes. Folks here want to get those bad folks on the other side for their own politics. He doesn’t need the stress. Write a book with a good ghost writer in a bit for some money, if he wants.
A desire for theater to get Biden or Nancy is fun for you and bad for him. He has to live with killing three and that takes a toll. You saw that on the stand, he doesn’t need to relive that in more extreme circumstances. If he gets off, I would recommend some quite counseling away from the nuts to get his life back.