I discovered Michael Voris when I was still NO. I found him to be a voice in the wilderness, really. Every time I went to Mass, I came home angry and confused about something and Michael Voris gave me validation for what I was experiencing.
So, IMO, he does have a purpose. 11 out of 12 bishops or priests are either perverted, modernists, liberals, or corrupt. They no longer are able to be the teachers or leaders the Church needs. People who consider themselves faithful Catholics are being led down the road to Perdition and don't even know it.
Sadly, the NO needs people like Michael Voris to open their eyes.
However, I do not support Michael Voris currently. I think he is hopelessly stuck in the conciliar Church and blind to some things, especially in his defense of the Popes.
I do believe, though, that eventually Mr. Voris will see things much more clearly in the future.