But this is the thing that underlies so much of the "complaints" about adsense over the last years. We "trust" google to make the correct decisions about what ads to display, because, in a sense, we have no option except to leave adsense. There is no reason now to trust them any less or any more than before.
I don't see anything different than before, provided google continues as before, thus rendering apples and oranges into the same fruity mix.
Now, as for their inability to communicate what the heck this means? Bad on them. They seem to be handling this whole thing with classic bad communication.