We tend to be marxist-leninists here. In history, successful ML-led revolutions are some of the most substantive opposition to capitalism there is.
The issue with anarchists is not that they oppose capitalism; it's that they sometimes try to pose themselves as an alternative to a socialist vanguard state, as uniquely freedom in a way that it isn't, and then their solutions have a tendency to amount to "communism but we ignore the need for large-scale, centralized logistical planning, production, and distribution in a modern industrial context." In other words, they tend to want communism faster than it can realistically be brought about for the modern age and they tend to be allergic to militant central planning, which bites them in the ass when the reaction / counterrevolutionary forces easily pick them off in their isolated position.