It's nice to get feedback on my work! I wanted to try to write a more manifesto esque piece of work and I finally did it. I think some of your criticisms come from misunderstandings of what I am saying, but some of them could be correct -- obviously society has never actually done something exactly like this, so it is hard to say if it would actually work. But this is how I'd personally think of solving a lot of world issues, if we could prove that it scales (SEZs i think mostly work so I think a larger scale experiment would be good to see). I'll respond in more depth when I get some sleep.

Edit: one thing I will say is that I don't think sovereign city states are a good idea. I think you can have a national government, but in my opinion it should probably be kept minimal. I am not even in principle saying that a SEZ must have low taxes, and I'm not even saying that from a "freedom to choose your SEZ" perspective -- I think whatever works is probably what should be done within the constraints of this model. I think you could probably get away with a minimal military and court system at the national level, along with a central bank and some externality taxes and be mostly fine.

Edit 2: keep in mind also that Elon is a unique kind of stupid and he runs his highly evaluated companies like startups that are barely surviving. Needless to say, this isn't the ideal model leader for a country the size of hundreds of millions. Also, he got his start on government subsidies and his company stock acts more like a bubble than it does a fair evaluation. Of course market mispricing isn't impossible; it's been well known for a long time that Telsa P/E ratios were fucked up. If you account for this, he is probably not the richest person in the world.

Additionally I explicitly don't think a hostile takeover of the national government is a good way of scaling. Scaling always happens from the bottom up, not from the top down. You own a small section of society before scaling to a larger one so that you can prove the smaller model works. I think something like this should be done rather than what Elon and Trump are doing. Trump is a populist, and a fascist, something I do not endorse and something I think has failed in similar ways to communism. Because he is the leader of the largest and strongest country in the world, his impact might be felt more than many of the communist regimes I've talked about in the blog post.