Every time I see that word I think of Kevin Federline/K-Fed, and I swear my blood pressure jumps at least 3 points at the thought of a K-Fediverse.

It does show it on the sidebar. To access the sidebar on mobile, tap the hamburger menu in the top left and scroll down just a little. This keeps your place in a thread when you exit the hamburger menu, and you don't have to scroll all the way to the bottom of the page anymore.

So for me, it does (at least on desktop). Next to the kbin logo it would say "/m/technology@lemmy.ml" as an example. However, this doesn't work on mobile, since there's not enough screen real estate. In that case, what @atocci posted is the only way I know of.