Gruber chiming in without adding much substance while attempting to stay firmly footed in the center of the debate by avoiding words with "extreme" connotation despite having roughly the same meaning ("foolish" == "unwise", etc.). For me it invoked images of a stuffy monocle wearing Briton.

Really you're putting words in my mouth though, the comment was mostly a facetious. I don't think there's anything wrong with it, I just found it amusing.

I believe he's trying to use "unnecessary" to mean Gruber finds it unnecessary because Apple products are so superior and always will be. This is used to:

  1. Nullify all the arguments in the post because people
     imagined wearing monocles must be wrong.
  2. Point out the fact that it is wrong for anybody to hold
     an opinion on anything.