But someone who posts an conservative article in a conservative community is under no obligation to have to discuss it. Many like it, post it, and move on.
Yes, that is the definition of an echo bunker.
And from what I see on Lemmy, that perfectly describes Lemmy as a whole.
Parts of it, yes. It depends on the server and the community.
Also, as far as I know, there is no way to make a community private. I WISH there was though. Or if there is, please tell me how to do it.
That's easy. Go back to Reddit.