iOS 15 Siri voices worked perfectly. However, iOS 16 has a lot of issues - such as skipping words and sentences, and stopping reading all together. Obviously, this is a problem with the TTS I myself use Siri to read books while driving, but I regret updating to iOS 16. I went as far as upgrading my iPhone SE to my iPhone 14 Pro thinking it was the memory issue, but it's the same issue on both phones even my Mac M1 Pro with 16Gigs has same issues.
https://youtu.be/g58nbW4J0DY
It would be nice to receive and update or even a roll back to iOS 15 state of TTS