Why are clerks so inefficient

Jul 2021
So I see we other professionals have to do 100 things at the time, and I also check the internet, social media and also this forum for instance, but I get a lot of things done daily. However, the clerk or people in the office, have to simply reply to emails, particularly during lockdown and they can work from home? What's so hard about that? And if someone sends you nasty stuff, you block them. How many emails do they get? My friend works too as a clerk now from home, but she said although she gets tired after a while behind the computer, she is ok as she still goes out.