This is the most correct explanation, but the first panel is still written poorly.
“Not to be racist, but” implies he’s about to do something that could be interpreted as racist. They both know it’s the watermelon candy that would carry that baggage. It would make more sense to say “I’m not racist, so here’s a blue jolly rancher.”
There’s a theory around that Elon even wrote the post.
https://bsky.app/profile/philco.bsky.social/post/3ldu7wfsr6k2g