Who? The NASCAR driver Kyle Larson casually called someone the n-word live on stream at the start of the pandemic, and is back driving full-time again now in 2021. He's by far the highest profile case of a "cancellation" in stock car racing, and he is an example of the "temporary, embarrassed hiatus" claim.
That's not a cancelled ride tho? It's admittedly a bit weird, but he's still driving in one of the top flights of American motorsport. He hasn't exactly been removed from the sport, as implied by Walter