Ask HN: Does Apple ban apps if they use private APIs?

I was looking at the recent OpenSwiftUI post and was curious about "unofficial APIs" and "private internal Apple APIs"

Does anyone have experience with this? Thanks Cocoa/Swift/macOS/iOS devs for any wisdom that you'd like to share

Seems like it's similar to using the Java internal APIs, but if they are available in the JVM I can use and ship them. The complication seems to stem from their audit process - if they find a usage in the app bundle they can just not allow the app on the App Store, so I'm curious how this works out in practice.