Perhaps it needs explaining why people do this.
As others have said, asking what might sound like a pointless question is a way to connect. There are endless angry rants threads on MN about the question “How are you?”, and why people ask it when they “obviously” do not care.
Seeing someone reading a paper, and asking “anything interesting in there?” is an offer to make conversation. I think the skill is in not asking the same question every time, and responding to somebody’s body language. Suppose a partner comes home from work radiating angry body language. Asking a simple “what’s wrong?” shows that you’ve noticed it, and gives them an opportunity to offload, if they want to, but equally, respecting if they don’t want to talk about it.
People often copy what they were brought up to do. If a DH came from a family where everyone acknowledges everyone, they will do it, probably without realising it. If you don’t like it, you should communicate that you don’t like it. I was brought up that if someone in or out of the family speaks to you, you must acknowledge it, even if it’s just a nod or a smile. The phrase “I’m not talking to you” was considered extremely rude. Even “go away!” was considered rude, we were supposed to say “leave me alone”, preferably with “please” in front.
In spite of that, I recently educated my 76-year-old mum on the way she does conversation. She finds silence very awkward indeed, and her way to break silence is to be extremely inquisitive, almost to the point of interrogation. If I mentioned visiting a cathedral, she would demand “who was the architect?”, or “you did make a donation, didn’t you?”. I eventually told her that this kind of questioning is exhausting, and she could instead say “tell me about your cathedral visit”, therefore inviting conversation, rather than demanding it. I think it’s because she was a language teacher, and in oral tests, she would ask lots of questions to keep the candidates talking. My brother told me that when she visited his new home, she demanded (among many other things) “where do you put your recycling”? His reply was “Do you really want to know?”And yes, she did really want to know.