It’s not the mechanism of branching that I prefer.
It’s the fact that Mercurial tags the commit with the name of the branch that it was committed to which makes it much easier to determine whether a commit is included in your current branch or not.
Also, Mercurial has a powerful revision search feature built in which I love (https://www.mercurial-scm.org/doc/hg.1.html#revisions).
I think that it’s probably to imply that it’s an allegation, not established fact that they were killed by the IDF.