Actually I don't know maybe BRobb was wrong. Here?s a good breakdown of the 2028 pick:
https://www.hoopsrumors.com/2026/07/details-on-2028-pick-involved-in-celtics-sixers-trade.html
Reading this, the most likely scenario is that 2028 is in fact a swap. But it really is not that bad. To understand this, you need to make an assumption about the SAS-BOS Swap. I assume that the net for BOS of this swap will be a pick in the 25 or higher range.
As to PHI, if one or both of LAC and PHI are in the lottery, BOS gets that lottery pick but has to send the net SAS/BOS pick back to PHI. So probably trading a pick in the high 20s for a lottery pick. A very good outcome.
If LAC is outside the lottery and PHI is 9-30, BOS gets LAC pick and does not need to send back the net SAS/BOS pick.
The SAS/BOS swap is top 1 protected so if somehow BOS gets the #1 pick in 2028, they don't have to swap with SAS and don't have to swap with PHI. They can just keep that pick and PHI gets to keep whatever they end up with between them and LAC.
So I think the net of this is that if the PHI pick is a lottery pick, either due to PHI or LAC, BOS gets that lottery pick but has to send the net of SAS/BOS pick back. If the PHI pick is not in the lottery, BOS gets the PHI pick and gets to keep the net SAS/BOS pick. So a lottery pick or two likely non-lottery picks.