Many Catholic believers are huge stickers for tradition. The previous Pope didn't go nearly so far as to allow female clergy, and he was not viewed with respect by many conservative Catholics. If the Pope declared that the church must allow female clergy, and if that didn't cause a literal schism, he would nevertheless lose the respect of most Catholics who didn't already agree with him.

If the Pope decides that it doesn't actually accomplish much good to force the issue when Catholics as a whole aren't ready for it, he could either try to advance women's rights without tipping the boat over, or he could just not bother.

This Pope is choosing to try to be a voice for good, and seems to do so from a deep desire for moral justice in an imperfect world. I'm grateful for that.