You should be fine with Sarah. Well, probably.

They're going after names more particular to white women that were at one time the most popular name but have fallen out of favor. That seems to be part of the slur, actually. A way of saying, "you're over".

Sarah has notnlost popularity and there are enough cross cultural variations of the name or phonetic sound alikes that you should be safe.

I'd be worried with a name like Breanna or Betty.