Proper storage of Kiwi
You're right that a sealed plastic bag wasn't ideal. But if they still look and feel okay, no obvious spoilage, no dark and squishy spots, then you've gotten away with it and they're probably fine.

As with most fruit, storing without ventilation can definitely encourage kiwis to overripen and spoil faster, and they're a relatively sensitive fruit especially once ripe. So I wouldn't have been surprised if yours had fared badly, but on the other hand if they started out underripe and the room wasn't that hot, I'm not surprised if they're still okay.

Sounds like you already know what to do, though: the fruit bowl is good, at least until they're ripe, and once they're ripe the fridge can hold them longer before going bad.