Obviously, it was a shame that blacks couldn't play in the majors until Jackie Robinson, and there were many great black players who played in the Negro Leagues who never played in the majors.
Nevertheless, from what I've read the standards and quality of the play in the Negro Leagues just wasn't as good as the majors. You only had about ten percent of the possible great baseball players in the country in the Negro Leagues.
But given the current state of wokery, this move was probably inevitable.