I mean if your definition of collectivism is men with guns taking what they want then yeah that sounds likely. I'm also a collective anarchist, but it's important to note how far we must come as a species before we can actually engage meaningfully in such a philosophy, otherwise it will just regress on progress made in other spheres. Bolstering of education is a good step in this process, but also moral and philosophical teachings.
Collective anarchism, along with all utopias, is unachievable, but a system incorporating its tenets is certainly possible, I just question whether it would devolve into men with guns taking what they want.