Note: this is why usage based tiers were based around the weighted stats, so that something like this was less likely to occur. It requires a rather large number of "bad players" to actually move something up, and fewer "good" players.
If you want to stop something like this from happening, maybe instead of bitching about it in this thread and demanding that somebody else fix it, you go out and use good stuff to get to the top of the UU ladder to outweigh usage of bad mons.
Meanwhile since people seem to be panicking (really???) re: Mamoswine in OU, keep in mind that the OU had a) 2,041,895 battles vs UU's 323,483 battles and b) uses the 1695 stats instead of the 1630, which makes moving stuff up somewhat more difficult. Also, if you really want to avoid it, go fucking play some games and get towards the top of the ladder so your teams count more that don't use Mamoswine ffs.
If you want to stop something like this from happening, maybe instead of bitching about it in this thread and demanding that somebody else fix it, you go out and use good stuff to get to the top of the UU ladder to outweigh usage of bad mons.
Meanwhile since people seem to be panicking (really???) re: Mamoswine in OU, keep in mind that the OU had a) 2,041,895 battles vs UU's 323,483 battles and b) uses the 1695 stats instead of the 1630, which makes moving stuff up somewhat more difficult. Also, if you really want to avoid it, go fucking play some games and get towards the top of the ladder so your teams count more that don't use Mamoswine ffs.