Well, he mellowed out. Not unusual for someone who gets married and has 8 kids and is a father helping raising those kids.
I take issue of his remarks that he has mellowed out and matured. Therefore, go after truth is immature? I don't understand those types of remarks. Sure perhaps his intense activism and behavior has changed now that he has to worry about a reputation and family to feed. But I don't see how truth is immature and then less truth is mature? Maybe idealism turned to reality for him.