No. Teams that panic and make any wild trades to try and put mediocre name talent around their stars are doomed to fail. (see Knicks)
Ainge hasn't had the move he wants, so he waits.
DA would hardly have been panicking by nabbing a guy like Afflalo or Asik this summer.
Afflalo went for a late second rounder and Evan Fournier. James Young on his own should have enough to trump that offer.
Firstly, we have different opinions on the value of Evan Fournier. I'm not convinced I would prefer James Young to him.
Secondly, that trade was made before the draft. Even if Orlando liked James Young more than Fournier, they would not have known Young would be there when it was their turn to pick at 17.
Thirdly, both Afflalo and Asik will be free agents this summer. Both will likely get raises. If you think Afflalo and Asik and Asik would put the C's in championship contention, I'll disagree but not question your logic. But if they don't, you've now given up multiple 1sts for two guys who you either a) let walk, or b) re-sign at the cost of not being able to get a free agent who might help you more (and/or complete a trade for another player who also has a hig salary.) You could probably make a decent 3-5 seed in the East with that team, but that's probably it's ceiling, and you have much less flexibility to improve it further from there. You might make a conference final if everything goes right, but more than likely you're a second-round team, or get bounced early if things don't go right.
Players of Afflalo's and Asik's quality are available every year. This year they'll both be on the free agent markets. Given what they cost to acquire, it's not unreasonable to have passed on them.