Just my opinion, but I don't think the issue is Dak as much as it is social media or, more specifically, how social media has evolved over the past few years.
Regardless of the forum or the topic, social media has provided a convenient and "safe" place for any and every crackpot to voice an opinion regardless the facts or evidence. I find it increasingly rare that anyone changes their mind on social media. More often than not, opinions become even more entrenched and the social norms or niceties you might expect in today's work environment disappear.
Let me give you a very quick personal example. I belong a FB chat group that focuses on risk management associated with technical scuba diving (technical diving is defined as beyond the limits of recreational diving -- mixed gases, decompression stops, cave, etc). Very recently, we were reviewing the circumstances associated with the Thai soccer team trapped for about two weeks in a cave system in Thailand. The amount of rancor, bad manners, name-calling that emerged from what should have been a purely technical discussion was disgusting.
I think the "no consequences" social media is to blame... what concerns me is, where does it go from here?