Certainly "ban hostile architecture" is oversimplified in that it leaves room for cities to continue forcing unhoused folks to sleep on the streets, but it has a better ring than "ban hostile architecture and provide stable and safe housing to everyone."
I feel like the later part should be assumed by the fact that leftists have been calling for housing the unhoused for many decades. On the other hand hostile architecture is (to my knowledge) a newer phenomenon that needs to be criticized in it's own right.
You can not be an anarchist while supporting the hierarchical system of capitalism. Full stop.