Maybe we're taking about different things but... My understanding is in the USA it used to normal not to talk about affection for your partner. In the 70s and 80s there was a huge cultural push to stop doing that and verbally express your affection and appreciation. It was drilled in that assuming your partner understands you feel for and appreciate them without saying it is like believing in fairy tales. Your relationship will end in ruins and your partner grows distant not knowing you actually care, appreciate , etc..
So here I am in Japan where I hear this stuff about not needing to express that stuff. You should infer it. Except I can't accept that because it was taught to me it's BS. So many spouses whos partner leaves feeling unappecisted and the other partner is like "but I shouldn't have to say it you should just know". There's 1000s of books on why that silence is a recipe for disaster. In sex as well the advice in the USA builds and builds , say what you want, don't expect your partner to read your mind. They won't (mind reading is impossible and expecting your partner to devine what you want is childish). Your be disappointed and frustrated and then take that out on your relationship.
So I don't buy it. They just sound old in the same sense that blood letting is old.