> He never claimed he did not grant full disk access.

False. In fact he has claimed this multiple times:

"Full disk access off. Muse synced 187k lines form my messages chat db." https://www.threads.com/@jasonaten/post/DdezsMJFhBr

"I still haven’t gotten an answer as to how it was reading my messages with Full Disk Access turned off, but I’d be happy to dig into it with anyone from Meta that wants to help." https://www.inc.com/jason-aten/meta-keeps-apologizing-for-mu...

This is why he's not a reliable narrator.

And another false claim he made, "Also, that full disk access doesn’t say anything about your message database", which anyone can easily refute by opening System Settings and reading the text.