I didn't see Tom Cruise with Matt Lauer, but I did see him on the Oprah. He basically acted like a goofball in love. I also saw the original interview he did on Access Hollywood (where he made the comments about Brooke shields the first time). And after having watched a bunch of interviews with Brooke about her ordeal, I thought what he said was really rude (and he claims to be her friend).
I have no doubt that putting drugs in your body has side effects. And I will even believe that ideally it would be wonderful to use vitamins or exercise. And I even admire the work Cruise is doing to try to help take children off of drugs.
However, that said, where does he get off saying that Brooke Shields or anyone else was not helped by drugs. She has always seemed to me to be a caring, nice person. And for someone like her (who desperately wanted a child) to have not wanted anything to do with her, well there was obviously something seriously wrong. I have no doubt that Tom has done research. But has he researched her case? Does he know for a fact that vitamins would have helped her? It's very easy to tell her not to take pills. But unless he has lived in her shoes, I think most people will just be annoyed by his comments.
As for what happened with Matt Lauer, I'm glad Matt challenged him. I would be interested to see the clips of exactly what was said. But I don't think Tom should be belittling anyone who doesn't agree with him.