I fear that it is. If it does, it will already be dead. These are symptoms that people have stopped thinking for themselves and have resumed following fads. It's a sad but observable feature of American culture that anything attaining celebrity today, tomorrow becomes the target of ridicule. It seems to be a national sport to set up, celebrate, and then tear down icons.
Simplicity is an expression of a change in consciousness.
It spins itself into form by means of a practice of livelihood that sustains and develops the consciousness that gives rise to it. Promoting it involves helping each other become more conscious and then living that out. Simplicity isn't an end in itself. It's what we do with it that matters. We don't need a simplicity movement.