That's not true at all. Decentralised communes are not even remotely Capitalist, but they are not statist either. Social anarchists have always, even in the 19th Century, advocated for communes/syndicates to be the means through which wealth and resources are to be distributed. Even Proudhon and Bakunin, who were more proto-Anarchists, were not remotely bourgeois in thought or philosophy. Highly flawed, yes, but not bourgeois.