Technically you can view & interact with kbin & Lemmy from Mastodon and vice versa but Mastodon itself is not really made to display kbin & Lemmy in your Reddit-like fashion. If you want to use kbin or Lemmy then I'd get an account on one of the kbin or Lemmy instances and use one of their frontends to view said content.
That being said, I can't seem to see this particular magazine in Mastodon, but I assume if I were to I'd see threads like they were a toot, with replies to it being more toots that reply to the original.