Ignoring the massive cost, legal hurdles, and the opinion of the residents/government/outside powers, if you could magically grant independence to certain territories or form new bigger nations from existing ones with no repercussions to yourself, what new countries would you create?
Please treat this as a non-serious post, let's not get into a massive political debate, those never end well.
Modern states suspend the rights of individuals to lifer or liberty as a punishment for breaking a rule. Rules like "don't rape people".
At least in theory, you can move to another nation or campaign for better treatment in essentially all modern states, exempting a small group of pariah states that still mostly don't rape people as punishment.
Not a single person I've seen has so much as suggested any mechanism whatsoever that would keep "self organizing collectives" from becoming fetit pools of bigotry and violence. We know that will happen because such groups arise in every nation already, but their impact is curbed specifically by the power of the state.
"Get rid of the government and we'll all do the right thing" is libertarian bullshit to cover their glee at taking things away from others. If you aren't a pro-rape libertarian, figure out how your proposed system would protect the vulnerable at least as well as modern states do.