Compare:
1) Use lots of time to find person who can impersonate specific other person. Unless you give them a lot of money or threats to shut up you can't use them to real time decieve someone.
2) Clone 1 million voices from tiktok in 1 minute. Contact 10 million relatives with a synth voice that is intelligent enough to answer questions.
We will have billions of AI's, containers, programs, agents running around trying to deceive absolutely everyone and their grandmother 24/7 soon.
Of course a human could do that manually, but with those AIs it's a completely different scale, and it can be automated (so someone with no skills can click a button "generate 10k fake identities online").
Maybe even with one click, those techs could generate a fake coworker and send phishing e-mails. Suddenly every single e-mail you receive (or friend request or call) could be a very convincing fake. You don't have to be a high-value target anymore, it's all automated.
That makes it much more dangerous: from "can be forged manually with time and resources" to "everyone can do it at scale for free".
1) The impersonation can be carried out in real-time by the criminal themselves. No need to employ anyone else. (No trail leading to them.)
2) Pro impersonators aren't common in society. They are limited as an asset and not duplicatable. So, using one cannot spread like wildfire and overwhelm our awareness that voice impersonation is something of a common risk.
Maybe the second could hold the first in check. I think disruptive tech like this & similar advances in visuals come with a societal impact that lessens potentials for realising the bigger fears. But people just love fears.
whilst this is cheap and easy - increasing the potential for scams in big way - even to the point of automating the scam