gimmicky strats and traditional singles walls are countered easily in doubles with the use of taunt, fake out, simply ignoring the passive mon, and even double targeting (attacking one opponent with both of your mons.) any doubles player that is either: somewhat decent and / or knows the specific nature of the gimmick they are fighting can very easily take advantage of passive mons like shuckle, or the gimmick in question, in order to set up their own sweeper or simply move towards their win condition. i dont know about snorlax specifically, but my guess is that it requires way too much set up and team support (bd + tr, im assuming.) i dont doubt that someone reached 1600s on ladder with these techniques because many ladder players do not necessarily meet the aforementioned criterea. you can read my post on defensive mons in doubles for more information on this topic.