My excitement over that “discovery” is the fact that it is yet another strange, frankly disgusting belief of the RCC, annalex. The beliefs just keep coming, each stranger than the one before. There isn’t a vehicle large enough to sport all the bumper stickers needed to point out grave errors, or just disgraceful RCC teachings.
You are referring in the honorific title of Our Lady, one of the very many she bears, as Spouse of the Holy Spirit. It is a title, not a belief. If you need me to explain the difference again, I will.
As to what you think of it, St. Luke did not write this
The Holy Ghost shall come upon thee, and the power of the most High shall overshadow thee. And therefore also the Holy which shall be born of thee shall be called the Son of God. (Luke 1:35)
with your senitivities in mind.
This would be another example of the defective Protestant method of reading the scripture through some personal filter and discarding whatever they cannot stomach.