I don't think photos are the real issue, it's video with voice.
Think of telephone scams, and now apply deepfake versions of a family member to it. Imagine your 70yo aunt having to deal with knowing if the whatsapp audio or zoom call that sounds/looks like you is really you.
I don't think this was possible before, feel free to prove me wrong with some evidence.
In the past to find the right person to imitate someone elses voice you'd have to do a lot of casting trials/etc that would cost a lot of money. So it was restricted to only large corps, governments, institutions, etc. But now any human person can do it. And that's great.
Think of telephone scams, and now apply deepfake versions of a family member to it. Imagine your 70yo aunt having to deal with knowing if the whatsapp audio or zoom call that sounds/looks like you is really you.
I don't think this was possible before, feel free to prove me wrong with some evidence.