[cyberax]

Abuse of private APIs means that your public API is incomplete. And that people dislike how your system behaves so much, that they're willing to muck with its internals.

[bigstrat2003]

No, it means that people think they know better than to listen to the warning.

[merlindru]

People would not use private APIs (which are undocumented and prone to break) if they had documented, stable public APIs

[stalfosknight]

No, it means some people are doing it wrong either because:

1. They don't know how to do it the right way

or

2. They can't be bothered to do it the right way

#1 I can understand. We all make mistakes as we learn and grow as developers. #2 is just arrogance / laziness on the part of the developer. Compounding it by blaming the platform owner that clearly and explicitly told you not to go that route is gross.