There are almost daily commits going to it, but the rate of commits is not the same as when a project started. By your logic any stable project on Github is dead. Also by your logic, when person grows in height until they reach their mid twenties and their growth stagnate, as they've reached their maximum potential, we can call them dead. Assuming you're above 25, by your logic you are dead as well.
If you spend little time at the forums you'll realize there are plenty of people using it with active community contributions and thriving open source projects and commercial businesses built on top of it.
Technology goes through phases (hype cycle) and Meteor is at a stable phase.
A lot of the comments here are ignorant about the the progress made in the last two years, to be able to form objective opinion, one need to proper research and not just listen to the FUD.