You don't need to ask where the problem is. Medium spelled it out.

"What we don't allow is the targeting of specific individuals"

You targeted Katie Jgln. Medium doesn't allow one writer to target another so they warned you.

Is Katie the only feminist writer that nails men to the wall for how some of the act? Hell no. If the "issue" was things feminist writers do, and you gave examples without names, you wouldn't have been warned. Your "issue" was things Katie Jgln says. Which is, essentially, targeting her. That's why they warned you.

Also? You are far too smart NOT to know this.