I believe it can theoretically happen to anyone, but the conditions for it happening are very different for each person in terms of the force required, location of impact, etc. The hit that Damar took may not have triggered anything in someone with slightly thicker ribs, a slightly varied heart rate, etc.

Now if they find something like cardiomyopathy or something where his heart put him at a uniquely elevated risk for this to happen, you might be on to something. Either way, I’d be shocked if he plays again, I could see him on a coaching staff but I can’t imagine he didn’t sustain some sort of long term damage