Censorship, beyond what’s required by law, is doomed to fail.
Censorship, as you call it, is a requirement for any platform. It's better to call it moderation. Without it platforms would be 99% spam. I assume you support "censoring" spam so that means you support some level of moderation.
Also, to the extent that a platform is surfacing content based on a friend or follow model, then that itself is intrinsically sufficient moderation for the spam problem (because you can simply unfriend or unfollow spam accounts).
(Spam friend requests and follows still need to be addressed, however.)