It's the older generation. They are the ones lacking critical skills and ability to understand what goes on Fb, etc
Edit: I don't see why this is so controversial. Younger people do stupid stuff on their phones, but they're more open to learning from their mistakes
The older generation has a more inflexible mindset and hasn't been on the internet/social media for longer (most of them, which is probably not so much the demographic here, even for older HNs commenters)
I see how a lot of people behave today and it's how I behaved and felt for a good amount of time. But that wasn't on the hate melting pot of Facebook, it was on more spread out and on more niche sites.
Or spoken in other words: some things are better left on a pub brawl table not as a hard statement on social media.