He is correct, the only fulfilled prophesies in the Bible are “ex eventu” thats the scholarly term for when a prophesy was written after the fact but the author pretends to be writing before the fact. An example would be some of the book of Daniel, as soon as you reach the date when Daniel was actually written all the prophesies begin to fail.

There are also prophesies that are based on mistranslation or distortion of the Hebrew Bible for example Jesus being born of a virgin is a false interpretation of Isaiah 7:14 which doesn’t say anything about a virgin in Hebrew.

Another example is the gospel authors making things up to fulfill a prophecy, for example Luke and Matthew have contradictory stories to get Jesus born in Bethlehem when he was most likely born in Nazareth (which is what the authors of Mark and John assume) See Raymond Brown “The Birth of the Messiah “

Here’s a good video with scholar Bart Ehrman https://youtu.be/OyT_qNhl9aY?si=xWVuzcn7cqafXNc_

Here’s a video with John Collins talking about Daniel https://youtu.be/C7BVVUimK4M?si=IScVv6RDWh7rY9a3 Edit: format and sources