IMHO the carefulness that was put in writing that message make it impossible to interpret it as antisemitic or bad faith. Actually interpreting it as antisemitic is bad faith.
Here's another possible explanation: maybe the message was posted by an individual who is generally banned from Debian mailing lists.
Come to that, maybe the same individual is the author of all the articles on the oddly-anonymous "Debian Community News" site.
I personally have no skin in this game, but if the message was censored from the list I would give the listmasters the benefit of the doubt that this was due to the author of the e-mail rather than the content per se.
A single other submission (an article on the Berlin Wall) and two comments relating to said article consitutes a HN posting history?
I'm not seeing anti-semitism here but I am seeing censorship.
Deleting messages that express specifically anti-semitic views is anti-racist.
Deleting messages that express specifically anti-state views, where that state imposes racial apartheid, is explicitly pro-racist.
This was the latter.