I watched the whole video. It is well done and well thought out. I always try to listen with an open mind with the goal of learning something new.
First, I agree that the Watchtower has a long history of getting it wrong when it comes to the topic of the beasts of Revelation. The goal posts are always moving with the Watchtower. I think that most will agree with that.
Where my research has me differing has to deal with the Apostle John himself. It is my belief that John, like Paul, was a zealot. Both John and Paul firmly believed that the end would come in their lifetime. That means the events of Revelation would have been fulfilled in the first or early second century.
Thank you for sharing.