I realize you're joking, but obviously there is a big difference between Tatum and Horford. If you just go by age and contract and pretend we're in a video game instead of the real world, it's not a crazy thought to think maybe selling high a 31 year-old making the max would objectively be a good strategy. The problem is, in reality trading Horford would be a huge blow mentally to the team, send the wrong message to players around the league about our franchise, and set us back at a time when the East looks wide open.
I happen to think Horford will age well and continue to play well the last two years of his deal, making dealing him not a necessity. However, if his contract is needed for a deal involving someone on the level of an Anthony Davis, then maybe I think all Celtics fans would have to think long and hard.