I think it's a bit more than that. The person upthread goes a bit farther than just whether or not someone cares about the future or not. It sounds like they've basically judged all childless people as hedonists who would gladly burn down the world as long as we get in one last round of golf.

Maybe that person doesn't really believe that, but if so, should probably be clearer about their position and not resort to veiled personal attacks.