Actually, many of the non-Catholic freepers who call themselves under the "P" umbrella term won't subscribe to this -- you have Old Reggie with unitarianism, cyc with Jehovah's Witnesses, then the various Pentecostals who would have a bit of dispute with A
Finally, everyone agrees that Yehovah, i.e. God the Father has no mother.
Maybe we should just define “true Protestant” as anyone who calls themselves Christian yet rejects the Catholic Church’s teachings. After all, the people you mentioned (and more) all at least have in common the fact that they hate Catholicism.
Wait, that’ll just put us back where we started...< sigh > ...it’s so difficult to please those who hate the Church.
Good thing we’re all conservatives who reject “political correctness” though! < /sarc >