Yes, but this thread starts with "Even if they changed this specific design decision/vulnerability, it seems like there's a big gaping hole (or I'm missing some

Yes, but this thread starts with "Even if they changed this specific design decision/vulnerability, it seems like there's a big gaping hole (or I'm missing something)." I don't see how WhatsApp would be vulnerable in this scenario assuming they change this behaviour, but OP claims there's still a big gaping hole.