I'm old enough to be able to say confidently that there were plenty of de-socialised people before 'technology'. I'm with the OP that is a 'social', ie: human nature, issue - those 3 things - but also a skill - especially in a work environment where you don't know your colleagues as well (points 1 & 2) and you don't necessarily have 'psychological safety' (point 3).

As a counter example, I've recently been following the 'rise if cardboard', specifically the evolution of magic: the gathering, because some young friends offered to teach me the 'commander' variant - it's basically managed conflict in a social setting - I have to acknowledge, they're more skilled than me - I'm learning more than just the gameplay.

There's a nice article 'power struggles among nice people' that's relevant too - because of the automatic effect this has on our language (cue Steven Pinker). I'm with the group that thinks we have large brains to navigate complex social environments - ie: this stuff - because it's hard.