Anyone who makes ridiculous statements like White men are so fragile and the mere presence of a Black person challenges every single thing in them should not be taken seriously by the intellectually honest. It’s an absurd statement and deserves excoriating - as would you, in my opinion, if, as you say, you made such an asinine and racist suggestion, especially as a white male who should know it’s demonstrably false (you haven’t seen it happen by the way, what you saw was a failure in your own understanding and the limits of your capabilities to empathize).
Yet it deserves neither a warning nor a ban. Even more ridiculous than the statement itself is the idea that someone needs to protect our eyes from seeing it, and that FB’s random content moderator contractor knows what is best for us and will be our protector. I am familiar with someone who used to do content moderation working for Cognizant in AZ. He seems plenty likable, but he is certainly not someone who knows what opinions will hurt me. And even if he were, I shouldn’t expect to be protected from hurt feelings when engaging controversial topics. That’s for me to navigate, and if it proves more than I can handle, it’s incredibly easy to block people.