User blog comment:B214/Question and Answers 3/@comment-24098614-20140708220033/@comment-24421137-20140708223217

That does not at all make Sirzechs a puppet. He is a symbol, for all devils, And with the title of Lucifer he can order other devils, also he has supporters to back him up.

Vali is not a pure blood, nor can Rizevim go and take the charge, as he is a criminal, not sure what actually happened with him, but yea, all the known members of the Lucifer clan can not take any power as they are either convicts, or not a pure blood, ultimately destroying the clan.