[12bits]

Regarding point 2

“Canadian research on "computer-mediated communication," begun long before the current lockdown, shows video chat is an inadequate substitute for real-life interaction. The real thing, dependant on non-verbal cues, is extraordinarily more effective in creating rapport and getting ideas across.”

[havelhovel]

The article is deliberately vague on actual research, and it appears that “computer-mediated communication“ may only be referring to Roghanizad‘s 2017 paper on email communication.