Their team cheated and deserved to have the title taken away.
That said, I have absolutely no problem with them investigating other teams.
These people like Victor Henderson are like the dog chasing the car, if he catches it, he is not going to like the results.
Go ahead, investigate other LLs, I can tell you right now who the other guilty teams are. They will come from districts similar in demographics as the Jackie Robinson West district. You see Victor Henderson needs more cultural education, especially about White people. He does not get that this could not happen in a White district, due to our culture. What I mean is, in the White district, if the LL coach brought in ringers to replace other white kids from the district, the white parents of the displaced white kids would have an army of lawyers suing the league before the could even start practicing. A white coach in a white district wouldn’t last a day if he tried to pull this off.