I understand what Paul Ryan is saying. But he wasn't elected Preacher, or Speaker of the Cathedral. He is an elected legislator.
You don't have to be "secular far left" to want your elected legislators to legislate. We don't allow Preachers to make laws in Congress - so Paul Ryan shouldn't be telling us to pray.
And, if some people object to him being Head God Cheerleader, instead of his job, he shouldn't go out of his way to bad-mouth them. That isn't very Christian.