In reply to Nathan Graham.
ah…. how many users do they have?

I didn’t say there are no uses at all, but there is no mass adoption… i am unlucky enough to use ninja forms and just from seeing all the UX bugs, I learned a lot about what JS APP core should be.

In the end of the day people that know how to write code can and will use anything appropriate, the question is about the people who have only “some” familiarity which is 99% of wordpress developers, were they able to do something non trivial with it?