My understanding of Daas Torah is very simple:
When we had neveim, if you were uncertain as to what Hashem wanted you to do, you would go ask the Navi. Today, b’avoisainu harabbim when we have no neveim, it makes sense to go to someone who spends most of their time contemplating Hashem’s will (and who knows you) to guide you in making your best guess at what Hashem wants you to do.
Frankly, I have a hard time seeing how anyone can disagree with this but I am open to hear any counter-argument. Note, however, that these are “best guesses” they are not nevua.