[JokerDan]

Possibly, but at the same time I am fully aware that babel is used in almost all of the frontend nodejs projects I have been involved with. It isn't something hidden away, it's something you set up for a new project or likely see/configure a little from a templated/skeleton project.

So even from a development point of view, not an end user, I don't think its a far stretch to 'being used by millions of developers, and they know it is being used'.