How does PokeStop work if I have Toedscruel with the "Slime Mold Colony" Ability active?

Slime Mold Colony only affects your opponent's discard pile and their Abilities or Trainer cards (it doesn't do anything to its owner), so the behavior of the PokeStop stadium depends on which player owns it. For example, if I have Toedscruel and my opponent uses their own PokeStop, they would be able to discard 3 cards from the top of their deck but they wouldn't be able to put any of those discarded Item cards into their hand. However, if I have Toedscruel and my opponent uses *my* PokeStop, it works normally because Slime Mold Colony does not affect *my* PokeStop.

Relevant cards

SV4_17

SWSH105_68