UCLA hoops back then was sort of like USC football now, but Wooden was such an advocate for the game (and also white) and a lot of people wanted to see a juggernaut like that, so nobody sniffed around too much, or if they did they were happy to go along.
Even if the program was totally clean, he was kind of a dictator, moreso than most coaches - he required his players socks to have an exact ratio of cotton to nylon, he made the players eat exactly the same meals every day (7 oz of roast beef, one cup green beans, one potato, etc.)
There's no denying he's a legend, and was a great coach, but now that time is passing it's getting safer to portray him as he was.
Can you remember an interview with him in the past twenty years where he didn't implicitly condemn the nature of modern hoops (i.e. mostly dominated by black people, some who even had tatoos!)