I'd be shocked if a professional surfer could tell me much about physics.
Just because you can, it doesn't mean you necessarily should. I'm a lot more effective as a marketer when I am selling someone else's code versus something I could scrap together.
This doesn't excuse programmers from ignoring your advice. We're a stubborn lot, and we make a living diving into situations where we have no idea what the hell we're doing, figuring it out, and carrying the day that way. We try to apply that to marketing, which is why most of our companies fail - it doesn't work that way in other fields. The ability to learn on the fly is usually more costly than it is with building software.
Having a debilitating disease such as ALS is almost certainly much more strongly negatively correlated with being a physicist than is surfing, yet nobody would be silly enough (given the notable counter example) to say "people with ALS can't be physicists" as a blanket statement.
But he is definitely not your standard Physicist.
Human beings can't surf.