I'm on the trail, but I check @steemworld every day to see what I downvoted, and I sometimes cancel my downvote if I think it's not necessary. It depends what the reason for downvoting was and if I think we overshot. If it's for buying votes, I usually aim to only take out the amount that wasn't earned organically. Each person can do as they wish. Nobody is forced to join the trail, and everybody has the right to cancel their downvotes if they don't agree with it.