[cdavid]

Or a good one who cares about their naive reports not to get burn.

Like any advice, it is contextual. Especially when working for large organizations, the OT is the right default. If you're leaving because things are bad, it will be a mix of 1) people know but did not care/could not do anything about it and 2) people did not know about specific issues. Younger me thought it was often 2), but actually it is almost always 1).