Bruh, if the EZLN is for murder under the color of rooting out counterrevolutionaries then yes they too are tankies, it's not about the stated ideology, it's about the authoritarianism they get up to regardless.
Lenin proclaimed an ideology that called for basically syndicalism, still used the cheka to kill all the syndicalists for being counter revolutionary.
It wouldn't have mattered who was running moscow, what mattered was their supporters demanding they send the tanks in to kill the "counterrevolutionaries" in Hungary.