What's stopping a dictatorship from adding these things? It's very strange to assume a dictatorship would be so noble as to not add a tool for abuse, and you include the Chinese government as an example already.
Not adding it today does nothing to ensure a dictatorship cant use it in the future
> Not adding it today does nothing to ensure a dictatorship cant use it in the future
Yes it does, if the people have the will to fight. Insurgencies have been surprisingly successful against the most powerful militaries in the world in the past few decades. Even in China, the threat of mass protest forced the government to soften Covid restrictions -- and the protesters didn't even have guns, or any leverage at all except their willingness to put themselves in harm's way.
Every dictatorship that has ever existed started off with the consent of the people, at least at first. All of the dictators in history were swept into office on a wave of popularity, and the people only regretted it later on. It's just not possible to impose a dictatorship on a population that doesn't want it.
Not adding it today does nothing to ensure a dictatorship cant use it in the future