Great quote, I bet it was very true in 1989 (34 years ago!)

I'm not going to try to prove the opposite, but after some number of DECADES it's worth checking on followup research. Here are some good places to start:

https://ux.stackexchange.com/questions/30682/are-there-any-r...

https://skeptics.stackexchange.com/questions/4355/is-using-a...