I frequent landlord groups (online) and I’ve never been a landlord. I own a SFH but could see myself temporarily moving out of state in a few years, and reading various online discussions had been super helpful for giving me an idea of all the things I should think about if I ever rent out my home. I’m sure there are a lot of people in similar boats, people who have no clue what being a landlord is like
From your comment it looks like your usage is mostly read-only so you'd have no effect on the "vibe" of said groups, which is what I replied to. A group is defined by its posters more than its lurkers.