Its true that the McDonald's case is often presented in a one-sided fashion that makes it look like it was a baseless lawsuit.

But its also true that responses, like the one you linked to are also often one-sided. And what would you accept from an association of lawyers who make money launching such suits?

The truth is, its not as simple as either side tries to make it out to be. I think the Wikipedia article: https://en.wikipedia.org/wiki/Liebeck_v._McDonald%27s_Restau..., does a good job of presenting pertinent details from both sides.