The fact the playful buff from it is weak doesn't really have anything to do with it if you keep a happy sim. It's asinine that a Sim is in mortal peril from being well taken care of with warm laundry. Tuning it down won't help at all because it's still an emotional state that can lead to death. Why not just make it a happiness moodlet? I feel happy when laundry is toasty. I don't start pranking people or laughing myself to asphyxiation when I wear warm laundry. Maybe I should be happy that wet laundry results in tension instead of anger when an appliance breaks so there's not two ways to die from laundry!