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I don't think that there is any way to stop devs from creating new crypto projects even if countries would try really hard to do that. I mean let's say a country would really ban crypto projects totally and would also forbid to develop crypto projects then developers in this country could still create a blockchain project and once it's finished launch it from another country via VPN or something.
I think you are aware that none of the projects accepts funds from US citizens, hope you are aware of the reason because the government does not allow to invest in these projects and have you gone through any legit projects that are still accepting seed funds from them, they will not if they want to continue with the project because they will get into trouble.
You can use VPN and other proxies to overcome restrictions to access a website, but when it comes to investment it is different, you could invest if the project is not asking for KYC and if it is a public sale but you cannot invest as a US citizen during private sale.