It's an inseparable pair.
Taking too many three pointers is nearly always followed by a lack of touches for the respective big men.
While some may argue that carrying just two true big men on the roster sets the US up for this type of play, I point to quality, not quantity.
Quality is that Anthony Davis is 10-for-11 from the field in the three games that he's been given playing time so far in the Olympics (he inexplicably did not see the court against Lithuania).
And quality is that starter Tyson Chandler is 7-for-10 from the field over the first four games (and he inexplicably did not record a shot attempt against Lithuania).
If the US wants to lock up a gold medal, their big men must begin to see more touches. Doing so will force opposing teams to focus more on interior defense, which will eventually open up the perimeter for the rest of the guards.