I wanted to comment on this thread as I had just left a comment on Dyer's channel a few days ago, to which he never replied. About a month ago, the Dimonds posted a video calling out Dyer for a debate on Palamism; still waiting a response. A favorite YouTuber of mine, MadebyJimBob, recently joined the schismatics after becoming acquainted with Dyer and Andrew Wilson of the Crucible. This might be mostly an internet phenomenon, but the schismatics are gaining momentum in this niche.
Dyer and other false apologists mainly focus on ripping apart conciliar popes and the false church or cherry-picking obscure quotes from the past. Foolishly, Dyer has a 2 hour video "debunking sedevacantism" using Pontrello's book. As others have pointed out, these men are flip-floppers and likely grifters. I left a few comments on another schismatic channel Ubi Petrus, where they also called out the Dimonds. Turns out the Dyer hosts a Twitter live stream where he controls who comes on or when it's time for the opponent to stop talking. The Dimonds want a formal debate on a neutral channel, similar to Pints with Aquinas. Dyer wouldn't last more than 5 minutes.