I am surprised to see that at least two people commented that the question “When should you say what you know?” by asterix is on-topic, because it looked clear to me that it should be migrated to Meta.
The question explicitly asks what we should do on cstheory.stackexchange.com, and if this question does not belong to Meta, I do not know which question does.
If it were a general question about when to reveal your ongoing work, not limited to the behavior on cstheory.stackexchange.com, then it would be on-topic. It seems to me that people want to interpret the question as the general question, contrary to what is written in the question. In my opinion, it is not a good reason to keep it on the parent site.
Update: After this discussion was started, Charles Stewart changed the question from the one about cstheory.stackexchange.com to a more general one. I am not sure if it is the intent of the asker or not, but at least the question after the edit is on-topic on the parent site in my opinion.