I actually really appreciate this as a kbin user, especially with regards to Beehaw because I know their goal is to specifically promote a friendly, safe community. It’s like visiting another country - I don’t get mad at newspapers with headlines directed at Brits if I’m a visiting American. With how easy it is to “travel” to another community with different rules, these types of cues help me be a better and more respectful visitor when I’m interacting in that space.
I think it would actually be beneficial to have some sort of sign or pop up reminder that you can mark “don’t show again” that helps explain this and shows the instance’s basic rules when you join a discussion from another instance. I saw a debate in Beehaw get kind of ugly earlier, and I was really surprised by it because I know how hard the folks at that instance work to keep the space kind and welcoming. Took a look at the usernames, and it turns out it was two kbin.social users name calling and arguing with each other in a Beehaw space without thinking. Totally rude, but I can see how you might not know that if you’re a new user and you’re just walking in with the expectation that all instances have the same norms, and it’s not even necessarily easy or clear at a glance what community a link in your feed came from unless you’re thinking to look for it.