'The writer doesn't understand...'sic'..."
Huh? The writer used it and used it properly.
The writer of the article does not understand it. The writer quoted by him does. The former makes a really dumb remark after the quote "Note the 'sics'. The message here is only those who are idiots could possibility think this way." That is NOT what the "sics" mean.
I should have been clearer that there are two writers here and only one is guilty.