I started ignoring him once he unironically started using the term anglos. With the exception of talking about 5th-10th century Britain and fighting between the saxons and the danes, I have never encountered anyone in a rush to use the term Anglo that wasn't deranged.
In their fervor to latch themselves onto some kind of cultural identity, they have reapropriated a term and made it so vague in its use than even their mutt heritage can still claim to be a part of it, while simultaneously pick and choosing exclusions as they see fit. The actual definition of an anglo has almost nothing in common with how people like this use it online.
For example, he says that America was conquered by the Anglos. But it wasn't, because large portions of America were in fact taken by the French, Spanish and Dutch, none of which are Anglo.