In reply to Emil.

@emil, wordpress is a CMS, not a webapp.

Anyway the rest api is not useful for webapps because it is not flexible enough. You need to create your own end points to be able to do anything sophisticated. The evidence for its lack of usefulness is that there is no use of it in 4.8, and the only usages to come that I know of, will have to create new end points.

As for gutenberg…. everybody knows how to use word. Gutenberg introduces a learning curve that will deny unsophisticated users the ease of use creating content with wordpress is known for.

Rarely anyone need to embed soundcloud in his content, rarely anyone needs to embed even a youtube video. Gutenberg mainly adds clutter and confusion to the content creation process. As I said, for some situations it has its advantage, but not for something like a simple blog.