There are people who enjoy discussion, and a deeper conversation; who are used to reading and listening attentively, teasing out information, comparing facts, focussed thinking. Who can remember the details provided by the OP, decipher scrambled grammar, etc, take a little trouble because because they are actually interested in the topic, or other people and what makes them tick.
There are other people who clearly don't really connect with others. A simple sentence is all they seek and they are really only talking to themselves, familiar, reassuring, undemanding. My favourite colour is blue. My first holiday was in Slough. Today I got up, caught the bus, saw some people; usual coffee, weather fine. Or, they ask pointless questions to elicit a response. What is your favourite TV program?
Social media draws lonely isolated people with mental illness who struggle in real life, and online, with their confusion and resentment.
In a group of mature to elderly people, like GN, inevitably some are displaying age-related mental decline.