The EZLN does not identify with the western political paradigm and thus they are not anarchist and they openly reject the label, but they are radical and they are opposed to MLism, not in an absolute opposition sort of way but in a strongly critical sort of way.

Subcommandante Marcos has written criticisms of MLism and similar stuff. One of his big communiques in this respect is the unequivocal I Shit On All the Revolutionary Vanguards of this Planet which is a response to criticisms leveled against the EZLN.

For something a bit more dry and measured is Listen, Marxist! by Murray Bookchin, who is a contentious figure in anarchism as he too doesn’t truly fit within anarchism as he broke with it later in his life, although this piece was written prior to this development in his politics so I’d say it’s a decent example of an anarchist counter-argument to what MLs argue for.

For a longer-form defense of the anarchist position in a more general sense, one that addresses ML criticisms without necessarily responding directly to them, is Anarchy Works by Peter Gelderloos. It’s not really something that attempts to deconstruct the ML position but I think that it will still be valuable in challenging your beliefs.