As for the former, yeah, I'm afraid they do....
As for the latter, yep, that's exactly what it says.
For the former, do you have any evidence to support that? I've asked this question many times and no one can ever come up with any research, study, evidence, etc, except for personal opinion.
Now, that doesn't mean it isn't valid. It's just that if people are going to use these kind of statistics, then it would be nice for them to have some support for their opinions.
As noted, when many people say 90% of fights go to the ground, they always point back to the LEO study. And that study actually contradicts their position.