He's just saying that it's something that happens in the sport. Everyone is glossing over the part where he says that it is something they are aware of and have invested in research.
Even the fact that, after retiring, the UFC offered Fisher job where he does not do anything and made $5000 a month. It was the new ownership that put an end to that, not Dana.
There was nothing wrong with what Dana said and you guys are just looking for something to cry about.
What's he supposed to say? Obviously, he feels bad but he's saying that it is something every one knows happens and they have research into it.