Brad is averse to trying to develop players. Several good prospects were there at 32, he wanted no part of them. Makes no sense to me, especially with '25-6 essentially being a lost season already. Instead, he drafts some guys who will never play in Boston.
I don't believe that this conclusion is correct. Just this draft, he took 19 year old Hugo Gonzalez, totally a developmental pick. In recent drafts, he took Davison and Walsh, both young developmental type picks. Amari Williams is 23, he will probably be on a 2-way deal and see minutes in the NBA this season. They will try to develop him into something.
During Brad Steven's tenure as GM, the team has been a title contender every season and will be again in 2026-27 and beyond. There is less need or availability to develop young players on a contending team. I don't know how Williams will compare to say Raynaud or whoever people seem to have wanted BOS to draft, no one does. They are second round picks.
I think this is a simple as BOS determining that there was not much drop off between picks 32 and 46 (right or wrong) and there were crazy trade up deals being offered. Sometimes it is better to take what the defense is giving you rather than trying to force a shot. 4 picks for 1 pick is a crazy offer and they probably ended up with a young big who has about the same chance of contributing at some point as any other second round big. It may turn out that one of the bigs they passed on will be that big over-achieving sleeper, giving people something to complain about for years to come, but actually not all that likely. More likely none of them turn out to be much more than a regular second round pick.