You cannot say that, you will be deemed a racist and lynched for your crimes.
Although it is no secret some posters clearly have issues regarding race. Some of the things people write, I am of course disgusted that people have experiences of racism but to presume it is every Caucasian's fault is ridiculous.
Some of those posters have been through a lot in terms of race, I remember one of the posters writing about getting mugged at a train station and stuff and was called all sorts of terrible things, so I am very sympathetic towards how they defensively behave when other posters try to call them out on reverse racism. I remember someone in JJ's forum calling me foolish for defending them, but I firmly support the black posters here. I don't think they "blame" white people, but they definitely are very aware of white privelege and will call anyone out on it.
I admire Serena a lot too because she is black, she has been through a lot of shit, have you read the youtube comments about her? Some of them are disgusting. And the IW incident at the age of 19, it's absolutely horrible to go through that at such a young age. I've always supported the boycott. I firmly believe that she isn't America's sweetheart because of her skin color. Sure, she's had some silly outbursts, but she's human, and I don't think those warrant the amount of hate she gets.
I don't think race is the issue, it's simply Serena is a fucking beast and a great champion, so it gets to their head. I hate to say that some of those posters live vicariously through this forum, but I really think some of them do.