"This negates any argument whatsoever from him in my mind." That's called throwing the baby out with the bathwater. A good argument subsists, independent of the person making the argument.
Discussion
Someone who doesn’t have skin in the game is irrelevant.
It’s simple: If you want me to care about your opinions on the thing which I use to save for my family’s future, then you had damn well better stand to lose something if you’re wrong.