The problem is that these are very active communities which are some of my primary interests. I'm just browsing all and not even any particular instances. I'm commenting on things I see which look interesting and engaging with the content in an area I have interest and knowledge, but I seem to be doing so in a way which defies some unspoken orthodoxy.
It's just been very frustrating. I've been a pretty prolific forum poster going back to Usenet and have several decade-old reddit accounts and I've never felt targeted or marginalized like this for what are honestly pretty mainstream ideas.