Even IF he was "sacrificing" (he isn't), he isn't sacrificing that much.
Hard to prove either way, but I disagree that he isn't sacrificing. With this team, he's sacrificing offensive touches for sure. DA mainly gets touches off pick and rolls, either as a pseudo initiator on dribble handoffs, as the roll man, or when it generates a surefire mismatch.
It's not often he gets an opportunity to just operate 1 on 1 in the same way Embiid or Jokic does, either at the post or high elbow. In year 1, DA got a lot more of those, and he ended up settling a lot for elbow jumpers. It wouldn't be hard to imagine him being on a team like Indiana where much more of the offense would start through him.
Note, in no way am I saying DA should be getting more of those looks, those other 2 are far more versatile in their offensive package from either location, but that's part of the issue. The thing DA has sacrificed most is the chance to expand his offensive skillset beyond what he's doing right now.
It's the same reason Jeremi Grant wanted to get out of Denver, because he foresaw that he would never get the opportunity to be the number 1 (or even #2) guy as long as Jokic and Murray were there. He could be the spot-up guy on offense and stalwart on defense for a much better team, but I'm guessing Grant and DA both know that ultimately stellar offensive numbers is what turns heads and gets the $$.