They didn't attack anyone, and it was for a reason, which was explained, and was both reasonable and positive.
Merely such a message could be cut out of it because those words do exist amid others.
I find it somhow very amusing.
That kind of humor emerged from usenet and early SA*. 4chan only exists at all because moot was permabanned from SA.
Rather than continuing the argument in earnest, they picked someone who had nothing to do with the original argument then stopped posting all together. The point of them doing that was to show they had no interest in actually continuing the argument, to borrow a 4Chan term: they did it for the lulz.
To clarify, it was definitely bad, but it was definitely the most clever version of "kill yourself" I've read in years. Maybe the past 11 years of internet discourse has made me appreciate the more "subtle" days where you didn't just chain random buzzwords together when getting into an argument. There was some class to it.