The linked article is too long and it is not obvious what exactly its point is. I kept repeating to myself be specific, be specific while reading it.

I believe there was most likely one specific thing that offended the author... and rest of the long unspecific article was simply gathering as many soldiers as possible to the battle -- and judging by the discussion that started here, successfully.

The summary at the end hints that it was a use of word "eugenics" somewhere on LW, or maybe somewhere on some LW fan's blog. Unless that was just a metaphor for something. The author is probably disabled and feels personally threatened by any discussion of the topic, so strongly that they will avoid the whole website if they feel that such discussion would not be banned there. Unless that, too, was a metaphor for something.

(The main lesson for me seems to be this: If you want attention, write an article accusing LW of bad things. LW can't resist this.)