again, if i want a sekrit club why not just host a bbs on my own machine, spool up an aws or azure instance, or otherwise do something much more immediately controllable and owned By Me™ instead of using Discord Wannabe #42069Yes, because they only accept Ethereum and don't really care who you are. They are as anonymous as your wallet.
You can just as well run services on Urbit and make them invite only. No one can discover them that way. There might be entire communities and economies on urbit I know nothing about because it's private and isn't exposed in any way.