Maybe Gallery offered him a better deal than he had with Bud's. His videos are how he earns his living so I understand that he has to do what best works for him. I like his videos and trust his judgement on guns more than I do most of the popular gun based channels on YouTube or other social media.
I few years back Hickok45, in one of his videos, said that the only brand of gun that he would trust with his life, brand new and right out of the box was Glock. That statement of extreme reliability made me consider buying a Glock, something that had not been my plan. I have since bought a few Glocks, use them as my primary home defense guns, and have never had a single issue with any Glock regardless of ammo fired.
It makes no difference to me where he gets the guns that he wants to feature on his videos.