if you tell me "A is a bully on social media(/in print, in whatever specific scenario) but very pleasant elsewhere" you are roughly 50x likelier to convince me that they have the additional vice of cowardice than you are to convince me that they have a hidden virtue of kindness
One of the things us an industry need to stop doing is perpetuating the 'they say this on social media, but they're a sweetheart in real life' about awful people I've had other journos say this to me about some of the most pernicious grifters over the years, some of who crossed many lines this week