I found that Job Postings are an exception. Google picks up on them, has a special API to submit them direct (due to slow crawling) and close them.

So long as you're a good actor that will get you far. If your data is low quality, wrong, error prone or otherwise you'll not get shown and will likely receive manual actions and end up in the Google proverbial sin bin.

I have found that incentives align for job postings.

That obviously doesn't prove that metadata is not flawed, just that there are areas where it seems to work well.