I did not downvote you myself, but at a guess perhaps it's the fact that not everyone uses a browser. Voyager in particular is very popular and I seems to go out of its way to hide that even - like you can click on "Sidebar" to view the community rules, but I have not seen how to be able to read the instance ones.
Voyager also by default hides the instance names after people's accounts. Every community on every instance is presented as if it were the same as all others. By that logic then, we are all the same space (with no distinction provided) as Lemmy.ml - the entire Threadiverse is very much is a tankie bar.