I think 5 or 6 years ago, I would agree with this. But I'm not talking about being comfortable with Windows, I'm talking about computers as a whole - a lot of younger people have grown up on app-based devices like iPads, deeply entrenched in "ecosystems". I've found myself in situations where when working with people younger than myself, I regularly find myself having to explain things as mundane as how files work since they're used to things like Google Drive. Sure, if you took someone with no computer experience and put a Linux and a Windows machine in front of them? I'm sure both have a similar learning curve, and maybe an arguably easier one for Linux. But realistically, when growing up surrounded by devices is now the norm, we can't really ignore the prior experience.