That barrel really sucks…..if you want to admire it on your TV and sip a whisky while doing so.
What I can tell you is that some of my best shooting barrels are far from pretty with a borescope. I also have some very slick looking barrels that don’t shoot that well.
I really don’t care how the inside of the barrel looks if it shoots. Yours is shooting in 1/2MOA with factory ammo and a factory (Remington) barrel. So, all is good.
I mainly use my borescope for cleaning purposes.