I'm not going to sing the praises of Rails. I think it is a pretty good framework, but it is one hell of a hype machine. As software gets older and more stable, people get bored and reinvent the wheel again, especially web developers that will stop at nothing until everything is written in Javascript.
Rails was a fad. Meteor is a fad. Keep your nose out of hype.
Fads are good. Being able to run everywhere is also good, but frameworks eventually need to give way to new ideas. Not everyone wants to program in COBOL on .NET forever.
Rails was a fad. Meteor is a fad. Keep your nose out of hype.