The people who farm after U10, most probably farmed after U9 too, and the removal of drops from public instances didn't change their occupation, but only the most rewarding path to their aim, and the ease of reaching it.
This is a common gameplay pattern in F2P and Freemium MMORPGS, and even P2P ones have it as a component. My point is: how much this component weighs in the LotRo end-game gameplay? Too much, in my opinion. But the problem is not in the path, it's in the destination. What is there, in end-game, that make people enjoy the game, have fun and/or achieve a sense of accomplishment?
I can't answer to this question myself on behalf of the community, but I wonder how many of the farmers are enjoying what they do, how many only want of the drops and are therefore doing something they don't like, and how many are doing it because they have nothing better to do.
Bottom line, my opinion is that it doesn't matter if drops from BoE T1 were removed or corrected: if they were, balances would shift and people would just find the new optimal spot for farming: we need more variety of objectives, in end-game content.
Three fighters for the Free People under the sky
Six less frequently used, on their benches of stone
Nine they are in total, doomed to guild crafting
One will never move from the oven, 'cause I can't play Burglar