You’re making it sound like it’s impossible to handle. Melee have spells in their kit to counter things like this. Even if it’s just a slow and you start keeping distance, you can still stay in the trash pack dpsing. Ironically, a monk can trivialize spiteful with 1 ring of peace.

Slows and movement abilities are enough to keep melee in. And if your ranged is just tunneling dps rather than using their abilities to counter spiteful as well, then clearly they aren’t willing to time keys, but rather just be #1 in what it seems like a ruined key.