Even though they didn’t produce anything at that meeting, a lot of things that happened subsequently look bad.
Could they have been setting up Trump for blackmail over trying to get the information? (Remember, they already had their hooks in Hillary. This would be a good way to hedge their bets.)
Let’s not be like the left and blindly, automatically defend “our side” automatically, no matter what. We’re better than that.
If they were, then that would be proof of collusion between the Russians and Hillary.