There is not. Muting is a form of censorship. You have censored them from your feed. The fact that your censorship has limited scope doesn't somehow make it not censorship.
Discussion
If I, the PM of India, censor you in Indian media, you can't go "That's not censorship, you can still talk in Australia!" That's just silly.
Muting is a form of “personal” censorship. Blocking out the noise.
Personal and societal censorship is very different.
You’re not kicked off from using #Nostr. You can change relays. You can choose.
I hate to be a realist. As I live in a big city - you’re quite aware everyone has a very different view. There’s stuff you agree on and there’s stuff on the edges that we may have differing views. Not everyone agrees on everything and this is very different than living in a bubble.
There’s a social norms where you don’t need to listen to what others say, not be rude about it and go your own way.
Personal and societal censorship are essentially the same from a moral perspective. The only difference is scope & consequence, which are irrelevant to a moral perspective. The fundamental act and its moral principles are the same.
If you simply ignore anything you disagree with, you will quickly find that you have passive aggressively removed those people from your society. The only real difference from taking them out back and having them shot is that you sleep better at night. Either way, they are still ostracized to extinction.