Once upon a time, the question was:- Are you Shomer[es] Shabbos? & Do you consume Kosher
No, it was always like this.
My grandmother grew up in Philadelphia in the 1920’s, and has told me some of her dating stories. Once, she went out with a fine young man (whose son is now a prominent rosh yeshiva). This young man decided to tell her a funny story:
Once, he was playing outside, and it was almost nightfall. So he told the other boys that it was time to daven mincha. They responded “mincha? we haven’t davened mincha since Jesus was a baby”
So she dropped him, because she didn’t like that he would talk like that, even just to say over the story.
And of course it should be like this. You need to marry someone with whom you are on the same page religiously.