Great comment and the first I ever heard about this controversy.
It seems to me that each new generation of scientists just have to have something new to say and do about dinosaurs - methinks to get grant money for studies and field work.
My personal observation is that today's animal kingdom is comprised of herbivores, carnivores and combinations of the two. It seems logical that the dinosaur realm contained the same mix. Likewise, the appearance of the teeth, sharp vs molar-like advocates for the two groups. Look at cows' teeth and then go look at a Bengal Tiger's teeth.
And, yes, I know there is a difference between warm and cold blooded here, but I believe one can find the same support in today's reptilian world, too.