This will be generational to some extent, and may disappear more and more as time goes on. But moderns controls are ABSOLUTELY an impendiment to people who didn't grow up with them.
When I use a controller, I do not have to think about where the buttons are; my fingers just flow to the places they need to go as it's muscle memory. Hand my wife a controller (Someone who likes games but did not grow up playing them), and especially on an Xbox controller, she finds herself pressing the wrong button fairly frequently, or looking down at the pad to make sure she's pushing the right face button. Pair that with dual sticks which are such an abstraction for movement that no one can be expected to just "get it" without practice. (It's very obvious watching the screen of someone who is practiced with a controller vs someone who isn't used to it when they move around an environment.) When games require that you not make mistakes like around this, and presume you'll have no difficulty executing some combination of button presses and movements or you fail, they quickly become impenetrable for someone who doesn't have the layout and movement memorized.
Conan plays things up, but people take so much of their gaming experience for granted. It's what I think of every time I see people bemoaning an easy mode being added to a game. People just can't see beyond their own experience.