This sentence is doing an unbelievable amount of work. I don't think you realize how strange it is that we have instant-speed trans-Atlantic communication that can transmit massive amounts of data. Computers are practically foreign objects to plenty of people born in the 60s, who grew up as they were invented. You don't think someone from 1920, with no prior exposure to them, would think that a smartphone is just a standard part of everyday life?
Not to mention all the other massive changes to society that you ignored. Commercial flights started in the 1920s and are now commonplace in everyday life. Digital audio; televisions; massive changes to cars; ATMs and credit cards. Can you imagine someone from the 1920s trying to operate a Dyson AirBlade?
This is before accounting for the crazy rate of cultural change that would shock someone from 100 years ago. Half the words used in daily conversation wouldn't even make sense to someone from 1920.
I think a lot of modern tech is really just 19th century tech done (a lot) better, smaller, faster, more conveniently, and much more widespread.