> If someone really believes that Stack Overflow is toxic then they should back it up with actual data and not hysterical and slanderous remarks.
It's poor form to call a woman's opinion "hysterical". There are other words that can convey a similar meaning without the heaps of sexist baggage that "hysteria" has historically implied. I suggest "inflammatory" here.
It's pretty telling that of the few comments on medium, two are actually people from SO trying to distance themselves from OP's "challenge".