Thanks to federation this post is visible on a wide variety of instances. Which specific instance are you petitioning to defederate from exploding heads? You're from discuss.tchncs.de so I assume that one?
I called it a hint, but it's rather obvious, in-your-face information. When you open a post it shows you the Community in at least 3 different spots. It's nobody else's fault that that's not enough for you.
You're making the same not-necessarily-true assumption that OP is making.
In Kbin, which I am using to view this instead of Lemmy, it shows it in two places that are both well disconnected from the content of the post itself. There are a bunch of different 3rd party apps being developed for both Kbin and Lemmy right now with various UIs, I haven't viewed this in any of them yet. I also haven't viewed it in Mastodon, which I'm told can be used to view Lemmy and Kbin threads. There are innumerable different possible UIs out there in the Fediverse.
And even then, it's still possible in this case for OP to have been discussing petitioning everyone to defederate from exploding-heads. That's a reasonable alternate interpretation and I can't read OP's mind, only what they wrote.
What I'm suggesting is that we should keep in mind that the only thing that people are guaranteed to see about a post is the actual post, there's no way of knowing what the surrounding context is going to be. The place you're posting it is not the only place it will be seen.
I think it's good to see what other instances are discussing about even if thye inky affect their own instance. It shows which instance this is posted on so it's clear it's not applicable to say lemmy.world but I want to see if other instances have had to take a stand against certain instances so I can avoid them until degenerated by say, my instance or if I need to move instances to enjoy that defederation.