We live in an entire country built on racism, from the Spanish encomienda and limpieza de sagre systems, to Puritan extermination squads against Native Americans, to African chattel slavery, to the genocidal bloodshed of the westward expansion against more Native populations and against Mexico, let alone what wound up happening in the Spanish-American War. The economic bounty of the post-World War II economy in America was partly built on denying the financial benefits of the GI Bill to black veterans, thus enabling things like white flight to the government-backed suburbs while depriving the cities where minority populations were left behind of economic activity and jobs.
So, yeah, Disney has long been a company comfortable with racism (one need only see the depiction of, say, the black-drawn centaurs in Fantasia, but there are plenty of other examples; heck, Mickey's design itself is based on the appearance of actors in minstrel shows), but not because of anything that's unique to Disney. It's instead due to a culture and society that was built on separating people into hierarchies based on the non-biological concept of race, then willfully exploiting or harming those at the bottom of that hierarchy, and that culture becoming ingrained and accepted as normal and "just the way things are." That's the foundation of the entire nation we live in, whether we want to accept it or not, especially when you go back and see how the slavery-era South was the Silicon Valley of its day, or how the railroad companies exploited and killed immigrants and other non-white groups to make their money and in turn make America an economic powerhouse by the turn of the 20th century. Again, this isn't because Walt or someone was uniquely bad in their views, but that's why racism is referred to as "systemic"; it transcends individuals and shapes entire societies.
So, effectively, your argument becomes "why do you choose to live in this society at all?", and I hope you can see how absurd that becomes.