Instead of Arguing about banning a core pvp entity of pp stalling, you guys needs to consider implementing a Forfeit function for every match, if a user wants to forfeit thinking that he doesnt have chance to win a match, he can choose the option to quit.
No one deserves to be banned for pp stalling, and think for 1 min about why gamefreak made abilities (ex : Pressure).
Let me give you guys an Example : Imagine if opponent has only Chansey left in team and you are stuck with 2-3 spatkers or Bulky special tanks(tangrowth or so) , there is a good amount chance that Chansey player will win the game with access to toxic and softboil , you cant ban a player because he is spamming toxic , softboil just to kill your team.
Think about it :)
If you guys really care about Pvp scenario and community , Think about making a Forfeit option
rest is up to you guys
Farewell :)