I find this whole thing very confusing because I never thought the voices sounded identical or very similar. I was initially even more confused about this whole thing because I thought I couldn't find clips of the SJ AI voice only to realize I had but it didn't sound like her.
This opinion is independent of Sam being a conman, scammer, creepy Worldcoin weirdo, and so on.
See my comment from yesterday re him being a known conman: https://news.ycombinator.com/item?id=40435120