This reminds me of Steve Yegge's classic blog post "Programming's dirtiest little secret"[0]. Yegge's post is of course about touch-typing, but it essentially makes the same argument. Doing things slowly is a liability, not primarily because it consumes more time, but because it makes you opt out of doing certain things because of their perceived cost.

[0] http://steve-yegge.blogspot.com/2008/09/programmings-dirties...