I don't believe that they do, in fact, it is probably trivial to make a fake WorldCoin identity, but people who support WorldCoin largely support it on the assumption that this is not possible.
I think the people who support Worldcoin do so either on the basis of it being another shitcoin they can make money speculating with, or because they're in Sam's personality cult.
It does
claiming to do != do
5 minutes on their website would answer this question.