Currently, registration is needed for the sharing of AIs, as you rightly mentioned, to prevent malicious individuals from distributing malware links. However, accessing the AIs does not necessitate registration. This is because, depending on your definition of "bad actors," users have limitations in terms of what they can presently accomplish with an AI, even in an uncensored state.
But they can stress your servers with tons of requests. The point of requiring registration is usually to prevent DoS, not to prevent the models from being used for certain purposes.
You can easily limit the damage with a Captcha or similar. Anyway, it survived being in the from page of Hacker News for a couple hours, so I think it's fine.
Currently, registration is needed for the sharing of AIs, as you rightly mentioned, to prevent malicious individuals from distributing malware links. However, accessing the AIs does not necessitate registration. This is because, depending on your definition of "bad actors," users have limitations in terms of what they can presently accomplish with an AI, even in an uncensored state.