The only reason they make comments like that is they know NOTHING about how to repair a bike and are afraid or to lazy to learn.
To ride the classic bikes you need to be willing to get your hands dirty once and awhile as more than one shop is staffed by "technicians" who can only plug a bike in and are lost when it comes to the classics. And by the way these bikes are Classics not old!
You ride and hold your head high as you're amongst the finest!
Welcome!