It seems that all we have here is your recollection of how much support the idea had ("semi-popular" or "a -lot-"; I'm not sure what the intersection of those two is) versus mine (scarcely any). I'm not sure we can make much further progress on that basis, but it really doesn't matter because the actual question at issue was about opinions now; do you think there is currently any support to speak of on LW for constructive mass-downvoting?