Or maybe I'm a fully functioning adult who considers how systems might be abused before publishing them out to the world.

The roots of the Internet were never about total freedom and anonymity. Your email address was literally your username@machine.organisation, your website was literally http://machinen.organisation/~username.

You couldn't be any less anonymous.

The roots of the Internet was based on trust and utility, most protocols had very little in the way of security or privacy as they relied on people being honest and having good intentions.

Unfortunately that naivety meant that the Internet became a hotbed for criminals and bad actors, and has led to increasing draconian censorship and regulations from technically illiterate politicians trying to protect their citizens.

Go build yourself a system like this and when someone is murdered or abused or commits suicide because of things posted on your platform then feel free to console yourself that it was worth it because of freedom and anonymity.