That must be really interesting research. (Shots per game is an average, and doesn't take into account individual games where the pattern is broken.)
JB has, for decades, stayed with the hot hand. One of my favorite examples was the semifinal game of the '92 BET (which we won as a #5 seed). We were double digit underdogs to SHall, which had won the league. Michael Edwards, who had been relegated to a deep bench position by Red Autry, came in the game in the second half and hit a couple of shots. Not only did JB leave him in the game--he called his number 2 or 3 consecutive trips down the court. Edwards kept shooting and making, and we pulled the upset.
There are lots of other examples of individuals who were allowed to stay on the court because they were "on"--Scott McCorkle, Greg Monroe, Tony Scott, etc., etc. But the real point is that when JB finds a combination that is clicking, he will stay with it, even if one or more of the starters is not part of that group.