You can do that on any platform but most normal people will only put up with having to keep blocking abhorrent content before they move on. Ans since normal people don't get censored on traditional social media platforms they gain very little from coming to a decentralized platform.

Also when I've tried out the muting it appears you still see the notes just it says "this has been muted", so when there are people being bombarded with abhorrent content they'll just be bombarded with little hidden note notifications.

Sure, I accept your premise that you believe people can make their own decisions. But what if the decision most people make is to leave the platform and go elsewhere, so it just ends up with a few die hards like yourself then a large pile of abhorrent crazies? Surely at that point there will be little reason to stick around.

The problem is that your ideal is based on the idea that people will make the choices for themselves but not ever choose "leave the platform" as an option, and every zero-censorship platform to date has devolved into just the worst elements because everyone else ultimately leaves.