I agree, to a point.
While ANY firearm operated indoors has an incredible amount of noise and muzzle flash, a .357 magnum cartridge in a revolver is INCREDIBLE loud AND has a muzzle flash like you've never seen. Something to consider. I do like my wheel gun, but I also think I'd feel better indoors if I felt like I wouldn't be blinded by the flash of that big magnum cartridge....
I expect to only need to fire it once. Shooting at an indoor range helps compensate for the flash effects - practice, practice, practice.