agree, most people welcome positive interactions, and I think most people reply with the kind of reply they'd like to recieve based on how they interpreted the intent of the post
but there's also the problem of how an individual defines 'positive interaction' and for a non-zero number of people, that means replies that aren't just polite or well intentioned, but also comply with a set of specific, unstated parameters
which is some prime grade mind gamey bullshit