That is Elon Musk not believing that Elon Musk is racist.
It took me 35+ years to realize I have a huge racist streak. And all that behavior was so similar to mine before I was told that I am a racist POS.
It sucks. And it is almost impossible to break out of it if you get that old with it.
All i can do is hope that I investigate enough of myself and don't micro/macro-aggress on Black Americans.
Elon Musk, my guess, hasn't had anyone break that news to him successfully.