I think the commenter is implying that we live in a culture where people think they can change the world by whining loud enough and long enough about a problem so that someone else fixes it for them, rather than doing the hard work of fixing it themselves.
Sure, but once things are given a name and a cause, you typically find very few people willing to actually do the work. You'll find most people aren't much interested in the issues they claim to be passionate about once the cameras are off and social media has moved on to another topic.
Not to say we should all wait for the powers on high to fix things for us, but be realistic in our expectations about what most people are able to affect as a single person.
I'd also argue that what some would consider whining is in fact a solution or at least a prerequisite for one.