Definitely not just age.
I was around 50 years of age when I started using Linux as my only computing platform.
I saw its possibilities from the first kernel that Linus put up for ftp and I started experimenting with it on an old 2 floppy drive Toshiba laptop the company then issued.
When I eventually switched to using Linux for all my computing needs both at work and at home I got lots of criticism from colleagues far younger.
My company manufactured mainframe and SPARC hardware, supported IBM and Solaris operating systems and associated peripherals so we were positioned at the high end of the computing ecosystem, the pinnacle of the industry, yet very short sighted.
My task to build a Linux mail server on a Sun E4500 eventually got terminated, though they began to take notice and tried to sell my services to customers already running Linux on mainframes but those customers were well ahead of our company and could support themselves.
I was once introduced to a customer who wanted to install Linux on his mainframe as a Linux bigot.
When the corporation eventually saw merit in Linux long after I did, at least my technical director had the humility to admit that when I was using Linux to do everything the job required, they thought I was crazy and gave me credit for my foresight.