No, not trolling.

The vast majority of API providers do provide libraries (of course, none of them "force" you to use them, and nor will we), and this is considered good practice in many places (see for example the recent "Designing Great API Docs" at https://news.ycombinator.com/item?id=3453315).

I understand the purism of doing it the REST way, but if in practice most developers end up using a library which abstracts away REST - that's what prompted my original question.