That's good feedback, I agree and I think we can put that information in the guidelines section for lemmy.ca and then link to it from any relevant pages (ex. the threadiverse how to block / report sections). It ties into our new proposed guidelines on our federation policy: https://fedecan.ca/en/guidelines/2-lemmy-ca#federation-policy
For information that is specific to our instance, I prefer to keep it on the other pages so that it is not confusing for non-lemmy.ca users that are reading the guide.
For lemmit.online specifically, we're open to a discussion about federating with it again. If you would like that, could you post on !main@lemmy.ca about it?