The article author attemps to make a distintion between "burners" and "aliases" but I don't believe one exists for this usecase. Let's say for the sake of argument that you think blocking burner emails provides meaningful protection (I don't, but services using such a list obviously do). From your perspective, an "alias" is the same as a "burner". Both can be easily generated in bulk by a human or bots, cannot be resolved to an identity, and cannot be compared to determine if two emails are the same person.