There is still a 1:1 relationship with accounts and people. They have just cut out some extra steps when the original account creator does whatever it is the 3r

There is still a 1:1 relationship with accounts and people. They have just cut out some extra steps when the original account creator does whatever it is the 3rd party wants them to do manually. That some people might use their Worldcoin account to do things on behalf of someone else is a different problem from the one OP was referring to.