“Negro Leaguers are Major Leaguers” would be a laudable sentiment. Recognizing the individuals who were unfairly discriminated against and giving them their due - very few people who are students of baseball history oppose that. (Although one might question whether, for example, putting Josh Gibson on a career HR leader board with 165 actually accomplishes anything with respect to fairly representing Josh Gibson’s ability as a player).
“Negro Leagues are Major Leagues”, on the other hand, leads to things like this:
https://www.baseball-reference.com/leagues/majors/1927-standard-batting.shtml
Telling me that the league average R/G in 1927 was 4.84 tells me nothing - it simply obscures history and makes it harder to interpret, and since it focuses on entities and not individuals does nothing to right any historic wrongs. The Negro Leagues and the AL/NL were not operating under anything like the same conditions, and mashing all of their statistics together, in a manner which does not weight the two (or four, if we are focused on individual leagues rather than the two separate baseball ecosystems) anywhere near equally because of enormous differences in the number of scheduled league games, simply obfuscates the historical record.
There is no valid statistical calculation that can be derived by using the average of 4.84 R/G. You can’t calculate how many more runs the Philadelphia A’s scored than average by using it. You can’t calculate how many fewer runs the Memphis Red Sox allowed than league average by using it. You can’t compare it to the league average R/G of 1952 and learn anything meaningful by the comparison. You really can’t even compare it to the league average R/G of 1926 and learn anything meaningful by the comparison until you check to see how the number of scheduled league games changed between the leagues being aggregated.
Baseball-Reference is a wonderful site, and I have no doubt that they mean well. But this type of presentation of statistical data does nothing to honor the men who were wronged.
If you think that is bad, look at the rate stats!
To me, the best comparison seems to be the current Nippon League. There are plenty of guys from that league who can come over and not only compete, but excel (Ichiro, Ohtani, etc). But, to say it is a major league and lump it's stats with the AL/NL would be wrong (though I'd love to see Ichiro as the all-time hit leader!) It is undoubtedly a shame what happened to so many throughout US/world/baseball history, but, this doesn't seem to help anything.