I think the author invited this though. Half the article is a well thought out discussion of important problems. There is some nuanced thinking about markets and capitalism that addressed both the pros and cons.
But the article started and ended with completely unsupported claims about how the world is going to hell and "we all feel it".
The commenter you're responding to merely pointed out that, no we don't all feel it, most people actually have things very good these days. And that doesn't mean there aren't still major issues that we should be working hard on.
A guy writes a blog post on important issues to focus on and what this guy comes up with is: "shut up, be happy".