Honestly, I consider myself an above average internet user and I don't understand internet. I do my best, but it's all a series of tubes and magnets (how do they work?) as far as I'm concerned.
The internet is a complicated thing even decades after its widespread adoption and it's constantly changing. I try not to be dismissive of people that don't understand parts of it, because there's huge parts of it I don't get either and I grew up with it and I'm on it all the time.