I don't think there's much hate between them. They may have had different musical ideas in the mid-90's, but that doesn't mean they hate each other as people.

As for Alec, I think even if everyone wanted it, his health would forbid him to do so. I remember hearing he had another motorcycle accident after his time in Bon Jovi where he very much injured his hip and he was walking with a cane at the HoF introduction. I think it was even mentioned in one of the pre-talks that it was hard for him to just stand for a longer time.