I think that you are attacking a version of the tank team that was a minority.
The point was not to hope for the team to lose. The point was to not be upset if the team lost. of course, it would've been nice to see DeRozan, Bargnani, Kleiza, etc. blossom and somehow make this team a contender. That wasn't the roster this team had, so why not welcome the development of the young players and the potential for the future in a season that doesn't really matter? Short-term winning can be traded for more valuable things.