Actually, Kyrios and Tomic have been pulled up recently for there temper tantrums.
I agree with a post here that Serena should apologize to the umpire, the US Open organisers, the public and a massive apology to Naomi Osaka. Sadly, Naomi Osaka is the true victim her but showed class, sophistication and elegance way above here years. Probably good parenting.
So I say a big thank you to Naomi Osaka parents for bringing up a talented daughter that I hope many young girls will aspire to be.