Back 3y ago the users claimed it did mean marxist-leninist (or rather if we must be pedantic, that the TLD does mean Mali but they chose it because it meant marxist-leninist to them.) They stopped around the time of the exodus (read: they put on a mask to trap unsuspecting redditors) and they've ramped back up since everyone defederated hex and grad (my guess, those users created .ml alts specifically to proselytize to the unwilling like Evangelical roaches once their supply to feed their victim complex dried up.)

History for posterity's sake.