It solved the Byzantine General's problem, which was thought to be unsolvable for over 30 years... but they make the claim it's "outdated"? Seriously... the mental gymnastics. So much cringe.
Stop saying this. THIS is factually not true. Byzantine General's Problem was solved in the paper that introduced it in the 80s. There have been many Byzantine Fault Tolerance algorithms before Bitcoin. For example, pBFT consensus was introduced in a late 90s paper.
These kinds of unfactual statements are not different than what you are trying to fight.