> One example of this was a malformed authentication function. The AI that vibe-coded the Supabase backend, which uses remote procedure calls, implemented it with flawed access control logic, essentially blocking authenticated users and allowing access to unauthenticated users.

Actually sounds like a typical mistake a human developer would make. Forget a `!` or get confused for a second about whether you want true or false returned, and the logic flips.

The difference is a human is more likely to actually test the output of the change.