I have to agree with BB, I don't remember that being something that was ever said.
Now I know in the past I have been like "RAWR BAD ENDGAMERS", but I don't think I ever cited stats as something they were wanting changed. Even if that were the case I would be sure that they would take more issues with Shell pulls rather than mem pulls (if they did, which I don't think was the case). I mean it takes far more to farm mems then it takes to farm shells. Plus it is a redonkulous amount of mems for a pull of top end stats, but you pretty much can get one top stat per 2 days with shells..... It wouldn't make sense that they would want mems changed but not shells...I just don't think endgamers complained about it.....
Plus more stats = cheaper stats for them. If there are more avail they can just buy them cheaper, instead of having to run and run and run and hope the stat drops... So mem/Eoj/Shell pulls just helps them more than it would hurt them.
I just don't think that is a valid accusation, just sayin.
Edit: plus endgamers get TONS of mems doing hard mode runs... why would they want that being the thing nerfed... Again doesn't make sense.