Who is the persecuted readers? Black people? That was not the demographic back in the 60s. Stan Lee was not pitched or aimed at drawing in non-white readers. Diversity comes in more forms than just race. There's gender, ethnicity, sexual orientation. A team of Jean, Scott, Iceman, Storm, Jubilee (or Psylocke) and Colossus would be diverse without having to change anyone's race
People bringing up Claremont is kind of ironic. Lein Wein and Dave Cockrum created the ANAD international team. Claremont came on and almost immediately killed off the Native American and got rid of the Japanese character. He then got rid of Banshee and every recruit up through Jubilee in 1989 was white. He did better with the New Mutants, but Jubilee was the only non-white X-men he created in that 17 year run and that doesnt include the problematic race swap he did with Psylocke (which was controversial considering he had done that with Tom Corsi and Sharon Carter)