Something I didn’t know before I became a VP at a middling tech co — as a senior leader, your actions are considered more reflective of the company in general and specifically legally. Obvious in hindsight, but an underling that gets fired is considered representative of not much. A VP, even if they get fired, opens the company to accusations that the behavior they were fired for is representative of the company, because of their role.
For roles where you are a voice of the company, you need people who will use channels, because the alternative is literally bad for the company in ways that are very concrete.
Put more viscerally, I would not want one of my peers going to the media before they talk to me and give me a chance to address their concerns.