I agree with this.
having recently moved over from Low post to LI, my SF and SG were getting in on the action a lot, both with regards to passing/shots.
With LI, its a bit more simple PG-passes to your best inside guy. score. so your PG ends up with the assists.
Also with regards to Low post, if your bigs have good passing, then they tend to also get more assists, and are willing to pass it back out. Ive noticed a difference in this as well.
Low post also seems to get more contained by a 2-3 zone, as opposed to LI. In my opinion of course :)