There should be some note or other indication when one is viewing a diff over
multiple edits versus over a single edit.
When doing a diff over several revisions in an article's history, such as in the
provided URL, the diff view looks identical to a diff over a single edit. In the
provided diff URL, it appears that Naconkantari added nonsense to the article,
when in actuality there were several edits by other authors between the
revisions being compared.
This can be problematic because many people assume that links to diffs are for
only a single edit, unless otherwise informed.