Surprised there are professional developers who seem to be clueless about the vast difference in the cost of developing 3p API versus internal only functions. The basic difference between public and private has been captured in language design for decades now.

It’s not API. That’s the whole complaint of the post. Just because it’s implemented internally does not mean it’s ready for framework support. Have you ever built an API before?

Then what’s the post complaining about? Just use the API!

What is “that”? The iOS SDK is public knowledge and it makes no guarantees about future features.