"Choose anything else" sounds like some FUD to me. I'm not an expert with all the technologies you mentioned but I feel like Meteor has just recently truly come

"Choose anything else" sounds like some FUD to me. I'm not an expert with all the technologies you mentioned but I feel like Meteor has just recently truly come into its own and I would pick it over Rails, Django, or anything PHP any day. I think another factor is the level of conservatism of the programmer in question: would you rather work on stable but somewhat boring platforms at a large enterprise, or do you want to be on that new-new at a hip startup? (These options obviously exist on a spectrum.) If you want to be in the fastest-moving, most exciting ecosystem around, it seems to me that JS is the train you want to be on.