The problem with saying things are 'priced-in' is that it's a basically worthless statement. There are so many things priced in, that it is impossible to know or understand them all. Some are right, some are wrong, and many are in-between.

I am an efficient markets believer, but I think most of the talking heads are a bunch of hot air.

It is a very worthless statement if you really think about it. Everything is priced in.. because that's literally the definition of a price - it's the cumulation of everyone's belief of what is going to happen. That's like saying water is wet.