Not remotely similar situations. Jordan and Magic both played with players that were frankly more highly thought of than Pierce and Allen have ever been. They weren't criticizing playing with talent, they were criticizing one "best player in league" choosing another "best player in league" and manipulating events to go play with him. Pierce and Allen have never approached that level (in addition to the difference between trades and FA moves), so the dynamics of things aren't even close.
That said, there is still a bit of hypocrisy in Magic's stance, because (for example) Magic (Kareem) and Kobe (Shaq) both got to build their legacy and win their initial titles next to arguably the best player in the league and one of the best in history. The difference, of course, is that Magic and Kobe began their careers next to those players and didn't choose to go there as FAs. Nevertheless, that's a slippery slope to argue because it essentially says it's ok to luck up and play next to the best and reap the rewards, but it's a copout to choose to enter that circumstance.
For someone like Magic, who certainly benefited strongly from being in the situation that LeBron now chooses to enter, to criticize...like I said, it's a bit questionable.