Taste is subjective and fleeting. The once lauded tastes of the 90s are now regarded as oh so dreadfully pedestrian by enlightened contemporary minds. The crux of taste is rooted in celebrity worship and group think. Taste is a roll of the die and a hope that your vision resonates with those around you. It's no coincidence that every great artist is eventually regarded as jumping the shark; their tastes evolve or rem…
Steve Jobs had taste, I doubt he was subject to groupthink, though.
I'm not entirely convinced that taste is really all that relevant when considering the success of iOS. Apple engineered a very tiny computer that completely eclipsed all other phones on the market in terms of feature set (large touch screen, gps, edge, wifi, IM, e-mail, mp3 player, visual voicemail, motion controls, modern browser, integration with iTunes ecosystem etc). Details like icon spacing, bezel width, and font kerning really didn't matter at the end of the day.
Finally, if Steve Jobs had any taste, it certainly wasn't appreciated by the masses who pay extra to obscure the iPhone's design with a phone case that favors their personal taste.