Randomex – that clearly can’t apply to everything. There are things that a person has to make clear beforehand, and things they don’t.
I think Rav Yaakov Kaminetzky zatsal told a boy that the fact that a girl read the New York Times shouldn’t be a reason not to date her, but on the other hand, he felt that t.v. should be a deal breaker.
These things depend on the issue, the person, and as you pointed out, the generation and society.
Of course, it’s possible that today, Rav Yaakov would say that the New York Times should be a deal breaker. Reading the NY times in 2017 is very different than reading the NY Times in the 1950’s, 60’s, or 70’s (or whenever the story took place).