[biblewonk]

The Catholic position is that the Temple which bears the Word of God must be immaculate. Granting this, does it make sense that she was

There is absolutely no reason to grant or believe that. It is purely invention. It is not suggested in the bible at all.

[Piers-the-Ploughman]

I have already posted this on FR but

Martin Luther believed in Mary's Immaculate Conception and her intercessory power, and her perpetual virginity.

Zwingli believed in verneration of Mary (Calvin opposed even this)

The Greek Orthodox hold similar views as Roman Catholics.

But somehow 75% of Christendom was wrong for 1500 years until a few "self-taught" and self-approved "Bible scholars"
tell us that hundreds of earlier saints and Christian leaders were all wrong.