In a comment to this question, I asked @aramis if he thought his answer should be split. He replied that he didn't want to. Instead of continuing the discussion in comments, I thought it was time to move this to meta.
Because what I really started to wonder was if splitting answers like that (not just his, all of them, mine included) would be better for the site, for the reasons I gave in the comment: more granular voting and better differentiation of good answer "segments" from bad.