In their shoes I wouldn't name the person publicly. Maybe I misheard or misunderstood something. Maybe it made sense in some broader context that I missed. Maybe their dog or their mom just died.

Or it could be that they're just an asshole, but there will always be assholes. Much better to make everybody aware of asshole behavior patterns. Then they're ready to deal with the situation, which they're much more likely to encounter than the specific idiot.