Actually, the argument he made was on point (failure to state a claim, etc.) as a
backup to Dean not raising jurisdiction in the initial reply (assuming Spectre had nothing to do with that initial reply). It is one of the arguments you can raise to get a case dismissed early on. Unfortunately, the judge didn't buy it.
So... badly written and unconvincing? Well written, but the magistrate is a very permissive in allowing cases to proceed? I guess take your pick. Maybe an actual lawyer could have made it work. Maybe not. We may never really know because
@FROG's lawyers raised many of the same arguments, but it didn't get examined because he won on jurisdiction alone. There's nothing really to compare it against in this case because the outcomes were so different.