Not sure that's true.
Rick's actions indicated that - as a coach - he believes it is his job to win every regular season and playoff game he coaches.
That's a short-term view.
Its seems to me that Rick's job is get win playoff series. And to do that, you've got to spend the regular season building your team into a playoff team.
Rick defines everyone's role in training camp, based on their current abilities and his confidence in them, and barring injuries, that's that. He doesn't use the regular season properly - as a time to expiriment with and invest in his young players so that they might be in a position to help the team in the playoffs, when winning games really does matter.
Rick, like many people in cyberspace, seems to forget that the regular season itself has very little meaning other than developing a team for the postseason.