I like it! Frankly, it should be something that hiring companies do anyways.

Perhaps extend it to something like everyone who applies, or responds to your comment”

Practically speaking, enforcement will be difficult/impossible for actions off HN - if someone claims a company isn’t responding, or using a templated email, how would you verify that?

By enforcing the same rule for a job thread, there’s a very clear location where the behavior of the company can be observed.