My kids know how to use the latest social media apps sure, but they don't know how anything behind that phone and computer work at all. I can write Android apps all day long but they wouldn't even know where to start.
I had to teach my son how to punch a hole through the firewall to run a Minecraft server for his friends 5 or 6 years ago. After watching me build a few computers, he has now built his own top of the line rig. But he didn't just "know" that stuff because he's young, he had to have an interest and learn, from an old dude no less. It's just like people that drive cars, most of them do not know how cars work but they can still drive. I can also take a car apart and put it back together. I can do a ton of other technical things as well. It's not age, but interest in my opinion, that makes a person tech savvy.
Please don't lump all people over 50 together. Many of us designed and built the tech that you are so proud of now. We stood on the shoulders of giants and so do you. Your time is coming as and "old person." Always remember that.