No… I deny that they mean what you interpret them to mean. Based on other writings of theirs, they believed the New Testament to teach the things that we Catholics do today. Polycarp’s infant baptism is glaringly obvious as is Ignatius of Antioch’s Eucharistic Real Presence and his attitude towards those who reject it. (“They incur death in their disputes”!)
So, even as Jimmy Akin’s article points out, they may have believed in the material sufficiency of scripture, but their writings show that they came away from it with very Catholic doctrines, which tells you that in citing them you have essentially shot yourself in the foot.
As a good Catholic, I have no problem with that at all. I would have problems with those who might misrepresent and (intentionally) misinterpret their writings to make them appear to support something that they do not.