Let me explain, modern tech is designed to be super user friendly, so friendly babies can use it. In fact babies do use it, I see babies on iPads all the time watching videos where spider-man impregnates Elsa.
Meanwhile, our parents and grandparents grew up in a time where you had to crank a car to get it started, and if you wanted audio in your movies you had to learn to, or find a guy who could play the piano. Tech was WAY harder to use back in the old timey days.
So grandpa, I supposed to believe you can figure out how a telegram works but you're confused about what the "send" button does on Gmail? Lets be honest you just want attention now don't you!
I can also back this up by the fact a lot of older people do manage to figure out how to use technology when they want it bad enough, like when my dad managed to put 6 gigs of muscle mommy porn on a remote, wifi connected, password protected hard drive so my mom wouldn't find it. Oh but you need my help to figure out how to change your Facebook password hun?
It's easier to ask someone else to do the thinking for you than do it yourself. If you have a readily available computer geek then why learn? Most people I know including myself only put the effort in to learn when all other alternatives are unavailable or if they genuinely enjoy the subject which i can guarantee most boomers don't.