I think it's equal parts fun and sad that our posts show up in /c/all. It feels like a harmless prank to ensnare careless Lemmings into wandering into our posts and typing out confused comments, unaware of the environment that they're in.
I feel moderately bad for people that are annoyed by the posts, but the real longterm solution is just not to use /c/all. /c/all will always be an unregulated firehose of content you probably don't like. When Lemmy gets more active, people can start reading only their subscribed communities and avoid stumbling into places they don't want to be.