You're jumping the gun and honestly being a bit smug about it. It says in the article "new structure of Zapatista autonomy", which makes this sound less like a collapse and more like a cryptic announcement that they're just restructuring.......
......Noooow it could well be that the restructuring ends up bringing the movement closer to Marxism-Leninism, but y'know we'll cross that bridge when we get there. For now it's like, don't diss them, OK? The Zapatistas are our friends.