"If the only course of action is to say "Oh no! They used a throwaway account, so there's nothing we can do about the toxic environment posts like this create for members of our community!" that doesn't bode well for having a non-toxic environment."

How on Earth was that comment "creating a toxic environment"? It was added a week and a half after the original post went up. By that time nobody but the most obsessive are still reading the same Reddit post.

Calling it "toxic" and having the CEO himself declaim from the pulpit about how this random throwaway account on Reddit with all of six posts to its name over the span of three months must be destroyed seems like using a nuclear weapon to kill a fly.