Or, you know, save all that money and respond with evidence that the claim is false, using links, citations and other information. It's a whole lot cheaper and it keeps you from being portrayed as a thin-skinned legal bully, something Internet Lawyer Charles Carreon has some first-hand experience with.
That's all well and good if the comments to which you object are false. However, since many of these complaints are likely more true than false, there's little point in trying to rebut them like a normal, civilized person.
I'm fairly certain that video games do have effects beyond what Techdirt likes to acknowledge. Just this past weekend, after spending some time playing Lego Pirates of the Caribbean, I felt the uncontrollable urge to go pick up my nephews and visit the Lego store in a nearby mall.