This is excellent news. And while we shouldn't assume that Egan supported the move, let's not assume that he didn't. When someone does the right thing, he/she should normally be thanked. Whatever Egan's motives, he will be attacked for this. We need to defend him.
Perhaps if there is enough of this decertification -- which we can hope will be quietly or not-so-quietly encouraged by the new Pope -- some of these BS institutions will actually be driven out of business. That would be a good thing. Some of the kids would end up at genuinely Catholic institutions, and some would go to the usual leftist places -- but without the phony Catholic label. Their leftist "education" won't be served up with pseudo-religious sanctimony, and things will be a tiny bit more clear to them. That's my guess, anyway.
Certainly this would be a way for the Holy Father to confront the liberals without getting into politics. I doubt that many of these schools could survive as strictly secular institutions. Most do not rank very high on the USNEWS listing.