The only instances I have seen of this are where the bishop shut down multiple parishes within close proximity of each other. Is there any surprise? No. He stopped catechizing them years ago, replaced their priests with Lay Ecclesial Ministers and then shut them down. Now he is preparing to do the same thing to another community. Catholics can tolerate just so much before they up and leave for greener pastures. And the Evangelical Churches are waiting for them with open arms.
You are correct, it happens as the result of a failure of the Bishop.
“The floor of Hell is paved with the skulls of evil bishops.”
I think that’s usually attributed to St. Cyprian. Point being bad men have been attacking the Church from without and within from the days of Ananias and Saphira.
And yet the gates of Hell will not prevail against it.