This clearly illustrates that anarchists are not capable of organizing in effective ways that can protect their ideology. The same way anarchists ended up losing to Bolsheviks, they end up losing to capitalists, and fascists. What Bolsheviks achieved was to build a socialist state that was able to defend itself and greatly improve the lives of the working majority. Anarchists simply aren't capable of doing that as the past century has shown beyond all doubt.
USSR was the first ever attempt at building socialism at scale, and while it may have collapsed, other socialist projects live on today and continue to improve lives of over a billion people on this planet.