You made a very bad choice for someone to call out... He might have actually used a handgun on a charging Kodiak bear... and may just have tremendous time in seriously wild country.
And I will say he is widely respected...
And I agree with his comments.
While I've not had to shoot any charging bears, I have spent a fair amount of time(going on 34 years) working/hunting/fishing/camping in just about every corner of Alaska. To include "going out to pack game". But, it looks like there's a new sheriff in Alaska, so I'll defer to his vast knowledge and experience.