I think you missed the point about "purpose over profit", it really gave this guy a feeling of that. And him telling that personal story is valid. It's interesting to think about why you seem to have deliberately side-stepped the point of the story.
Actually, analyzing and thinking about the way you wrote this comment, it seems you're just bitter that someone found something they really liked, that gave them a sense of purpose, and now you're trying to find some way to diminish that to yourself, to make yourself feel better, without actually taking the responsibility to do something to make your life better. Which tells us that you wished you had that purpose, but you feel you don't.
Some free advice: go about making that purpose for yourself, rather than making yourself feel better by trying to diminish the achievements of others that trigger you right in the feels. Another way to say it is, instead of making it all about this guy, when you get triggered, stop and think about "why do I feel that way?" and go deep into that. It's not about other people. What you feel is about you. Learn from that. Don't project, don't take it out, don't blame others, just learn from that uncomfortable emotion you're writing this thing to avoid.
Don't get me wrong, this is more than advice. I've seen that attitude cause a lot of unnecessary hurt and conflict in the world and in relationships, and I want people to stop it.
It's a pattern I've see a lot. Definitely has it's own genre voice as well.