I'm a 76ers fan in addition to a Devils fan, and I have no problem with what the 76ers are doing. As others have noted, in the NBA if you are a mid-level team that makes the playoffs most seasons but isn't a championship contender, you are perpetually stuck in the netherworld of never becoming a championship contender. You really need a superstar, and preferably two superstars (or at least a superstar and a star plus caliber player), to win NBA championships. The 76ers as they were constituted for about 3 year period (2009-2012) had a nice team with a lot of good complementary players, the kind of guys who help you win an NBA title as your 3rd to 8th best players, and they played a smart brand of basketball. Unfortunately, they didn't have a superstar, and they weren't in a position to easily acquire one either. (The disastrous Andrew Bynum deal was their attempt to get a player who could tilt the court for them; unfortunately he only ever tilted the bench.)
By doing what they are doing, the 76ers have a chance to get multiple superstar or at least star plus players on their roster. The Michael Carter-Williams draft pick this past season looks like a genius move right now, and they made a very calculated move to trade for Nerlens Noel (who hasn't played this season but was thought by many to be the best pro prospect in last year's draft; because of an injury he suffered last season in college, he dropped to the #6 pick in last year's draft however). Assuming the 76ers don't get screwed in this year's NBA draft lottery, they'll have a top 3 pick (their own) and roughly the #10 pick (also acquired from New Orleans in the Noel deal) in what is considered to be a deep draft. (New Orleans will keep their first round pick if it is in the top 5; the only way that will happen is if they win one of the top 3 spots in the lottery, which is a slim possibility right now.) If the young guys the 76ers have and will have turn into star players (a big if), they could turn into a legitimate NBA championship contender within 3 years.