Here's what I'm trying to understand.
Are infrequent/new posters feeling like they should be an instant part of the comraderie on here? To me, that's a far-fetched notion. You're probably not gonna feel part of it right off the bat.
Look at any aspect of life; starting a new job or school, hanging out with different groups of people, joining a sports team or club, etc.
It takes time to fit in & be accepted by those groups. This place is no exception. You contribute, pay your dues, perhaps pop in more than twice a month and if you're posting quality stuff and engaging with other posters then you should become more of a part of the community.
It takes time to "fit in" to any situation. Sometimes, I think there is a sense of "instant gratification" that people are looking for. To me, its unrealistic to think you can just walk into a situation and be immediately accepted and praised. It takes time. If you're posting quality stuff or just being funny, then eventually you're going to be noticed.