maybe. we don't know anything about op. could be just a kid, or someone else who doesn't have much political power for whatever reason. that's partly why its stupid and elitist to second-guess other people's priorities.
Also, it can become an endless circle, like: how can you have a reef tank when the polar bears are dying? - how can you care about polar bears when people in Syria are fleeing? - how can you care about Syrians when there's kids in the US that don't have good schools? - how can you care about schools when there's kids who don't have enough to eat? etc. etc. etc.
fwiw it seems like people who make those arguments usually aren't exactly out there doing anything themselves. for all I know Mark is like living in a tent in Haiti as a full-time Medecins Sans Frontieres volunteer or whatev, even so, his opinion on how op should spend their free time wasn't requested and doesn't matter.
but that's just my unrequested and irrelevant opinion