The AD trade is gonna ruin the Lakers for years in the future. LeBron is the worst GM influencer in the NBA, he has been at it ever since he went to Miami and, after his success with the Heat, it has become repeatedly disastrous. He pressures his teams to make terrible decisions to sacrifice almost all future assets they can in order to boost chances of winning now, pushes them into making moves that put them in the luxury tax/salary cap purgatory, and when his contract is up he bails to find a new team with future assets that they can get rid of to maximize the current version of the team he joins.
The long-term ramifications of selling your future are irrelevant to LBJ, and it became irrelevant to the Lakers as a result. The Lakers leadership is incompetent and the AD trade is already regrettable for them as they didnt understand their salary cap limits and can't even fill out their roster with enough quality players on competitive contracts to really be a contender unless LeBron gets multiple quality vets to do what he won't - take less money to be part of a winner.