“Your mother should have aborted you” easily ranks as one of the worst things you can say to a person. Everyone is probably allowed one or two incidents in a lifetime to completely go bonkers but an outburst like that certainly crosses all sorts of lines and for sure, umpires from all sectors would come to point it out.
I believe freethinkers are a proud people in a sense that they often undertake to set themselves up as judges of Truth and Knowledge, laughing at the idea of being shipwrecked by the laughter of the gods. But I also believe that freethinkers are a humble people because they acknowledge their own fallibility.