How the hell are we going to drag and drop inventory items onto people now? Say, like, oh I dunno.. CUSTOMERS that are in a hurry?!?!
Ever since viewer 2 (original) - transferring inventory was steered to the IM window. Any time you click the "Share" button from the inventory window, the IM window of the person you chose would appear - not their profile. If you clicked on someone in world and chose "Give inventory" (or "Share - I forget what it's called) - it would open the IM window - not the profile window.
However, up to now, the profile window *also* worked.
But since the beginning of Viewer 2, Linden Lab has been trying to train us to transfer invetory by dropping it onto the IM window with that person. And this makes a lot more sense to me anyway. In my mind, dropping inventory to me without at least chatting with me is *rude*.
I myself have been transferring via the IM window ever since the ability arrived in 1.x viewers as I prefer to send an IM that I am giving inventory. Doing otherwise is, as I have said, outright rude.
Main point: I am with the impression you have not been using Viewer 2 at all for any length of time, but are rather having a knee-jerk reaction based on what someone else has told you, or your initial experience without much more than a quick look-trough.
Contrary to what those with frictional attitudes would have you believe, Linden Lab is not stupid. Sure, they make mistakes (some of which could be thought of as stupid) - but in the end, they aren't so stupid as to break a major function of the SL experience such as inventory transfer.