Ha, if only you were really betting, I'd love to bet the opposite side of this. Nothing about how Facebook has been handling its recent crises would lead me to conclude that they 'know what they're doing' in regards to public relations.
I don't believe he's saying he would not use the product BECAUSE the FDA has approved it, but rather FDA approval has not always been the best indicator that a particular product is indeed safe.
and yes, adding this in you do _not_ have to type out your sudo password and can grant permissions using only touch id.