I am one of “these people.” I’m pointing out something to the gp comment that people don’t consider when they make generalizing, moralizing comments like this.
You’re putting far too much into the response than is there. The point being responded to was “why optimize something like exercise?” a reason was given. It’s not as uncommon as you seem to be making it out to be.
Nobody is telling someone who physically can't run to run. There is no reason to interpret it this way.