Normal dutch words: "dik", "hoor", "moet", "kunt" and many more. Put any of those words on a sign, in chat or in a book and it will get censored. Sometimes we can't even read each other sentences. Its obvious those words get censored in English but the young playerbase around the globe does not speak English that well. It would be rather weird to prevent every player from speaking in their own language just to stop US / English kids from swearing.
Our group of friends have been unmuted in the past so I will probably have to reopen this issue in the future when we get censored again.
Minecraft has players ALL around the globe, it should not try to censor every language. I sincerely hope minecraft will remove this annoying feature or implements a way to disable/improve it.