Nothing in this article that demonstrates a biblical basis for the assumption, the immaculate conception, etc.
It’s all “feeling” and “acceptance of authority.”
The way it comes across to me is: Because he feels the RC authority fits, then just accept everything the RC says, including mariology.
So, the bottom line remains. There is no biblical basis to the assumption and the immaculate conception.
Sure there is: Apocalypse 12:14 and Luke 1:28. However, the author gives you more than that: he explains how the entire mindset of Protestant textproofing is an error and a misunderstanding of the scripture.