No. It is like someone saying that people who own power tools are more likely to be injured by the same power tools. Nothing more.
Now that is more believable. My circular saw really really makes me nervous whenever I handle the thing.
He says that weapons harm people. Have you ever had a power tool get loose from your garage and go on a rampage? I've never had a gun do that either. Last time I went to the range, I had to aim at the target and pull the trigger.
Moreover, he said that those weapons "more often than not they harm the people carrying them." That's not like saying that those who own power tools are more likely to be injured by power tools than those who don't own them. That's like saying that if you own a power tool your chance of being injured by that tool is at least 51%.
Do you believe the chance of cutting yourself with a circular saw is 51% or more? Is my chance of accidentally blowing my brains out with my Mossberg 51% or higher? Because whether he realizes it or not, that's what Mueller's saying.
BTW, I've used power tools for 25 years now, with zero injuries. I've never had or witnessed a gun-related injury, either.