I think people are just sore because she grew up in a hellhole and still wiped the floor with all the kids who enjoyed country club memberships, million-dollar “tennis camps” and all the advantages traditional big tennis winners enjoy.
That is the definition of talent.
And if a lack of “class” is the new standard for diminishing someone’s amazing athletic achievement, privileged darling John McEnroe should never be allowed to show his face at a tennis court ever again.
I think you're right. I guess it goes something like this, in some minds:
Serena Williams does a 4 second victory dance after winning a Gold Medal - slut, ghetto, gangsta
John McEnroe yells, throws things, insults people, whines incessantly over course of several years - competitive, fiery, determined