I have never heard him mocking Catholics.
Oh, and he likes to joke about his conversion to Mormonism being because of his “hot Mormon wife”. He did do it out of wanting to be with her, but he says he took a lot of time trying to find one, and while I don’t know if Mormonism was a right choice, I think he did a lot of soul-searching about it.
Additionally, you forget that there was actually a period of time between his “Catholic” faith and his conversion to Mormonism in which I don’t think he really believed in God. If anything, while it’s regretable that he turned from the Church, at least he took a step in the right direction by saying God exists again.
We do not know his true intent in becoming Mormon. Also, we do not know how his experiences when he was Catholic affected him (You do know his mother committed suicide at the age of 13, and not long after that point, he became addicted to alcohol and drugs.)
He did wrong, yes, but we cannot judge him to be a bad person. If his suggestions on ending funding to groups that go against Catholic teachings improve the Church, why is that a bad thing that we shouldn’t listen to? Just because he was once a somewhat-Catholic that converted to Mormonism?
We should pray that he and his family enter back into the Church, no doubt. But we should not disregard his words just because he is not Catholic, nor should we think less of him.
We are all sinners. Let us pray that Glenn comes back to the Faith, but if his words heal the Faith, then they should be heeded.