I don't think you can really call their politics Leninist, or consider them elitist.
Originally the ideas around the ACF/AF which came out of something called Libertarian Communist Discussion Group formulated around an Anarchist concept of Platformism that developed, and to some extent was succesful during the Russain Revolution, and to a lesser extent America in the early 20th Century, theoretically written about and formulated to Alexander Berkman(by them in the mid 1980's) and now it seems Nestor Makno.
A good guide to thier theoretical outlook in reality(practice, as far as I'm aware seems limited to them), can be seen with their previous relationship to CNT in the mid eighties, when they were handed over money from the Spaninsh government in recompense for their treatment towards them by the Franco regime. They made links for support to a dissident group with more of a socialist(marxist) outlook calling itself CNT(Itt) I think.
They used to distance themselves from centralised marxist programms, by having hours long discussions about minor details, that could be brought up at any time(and frequentely was), and quite dodgy views around the evils of nationalisation(in my opinion), especially in their pamphlet on NHS.
These days they seem to be the Anarchist Equivelant of the SPGB.