But you could accomplish your goal by just starting your own instance and then refusing to moderate content on it - sure, yourinstance/c/news might not get as much activity (or maybe it will take off) but you can’t force people who prefer to have moderation to play in your sandbox. You don’t need a new technology, lemmy can do what you want just fine - you can even refuse federation!
Give it a shot, try running an instance and see the difficulties in dealing with open nazis and bots.