We have multiple Meteor production apps. It's by far the best developer experience I know about in the JS world. Zero config build tooling. Easy reactive queries. Saying it got steamrolled by npm, mongo and react doesn't make sense. In the end it's a node application and so you can use any npm package. It's preferred view layer is react and you kinda have to use mongo.
I guess I was referring to earlier Meteor where it used its own package manager (Atmosphere?) and front-end/templating (Blaze?) solutions. And actually that MySQL/Postgres might have been preferable to Mongo.
