It's a gimmicky tactic that allows you to simply make the safe play every turn and be rewarded for it, while your opponent actually has to have specific stall breakers and make plays/rely on luck to win.
Look at a team like wondertrio, just by making safe switches and bouncing enemy rocks/trapping mini threats/setup sweepers this team is intended to be unbeatable.
After all of the stall-favored bans, it's by far the easiest and most reliable team design for winning games, thus why most people choose to not respect regular stall users.