Depends.
An intrinsic element to Gieseking’s 1944 Emperor is the anti-aircraft cannon in the background. This makes perfect sense of the phrase of rambling chaos up and down the keyboard, of what happens when the emperor gets lost - people die. As such, it is part of what makes this the greatest Emperor ever recorded. If not audience noise, it's what neither performer nor composer intended.
Folk music is often improved by the audience, although the most intrusive lout ever recorded can be heard on the Kingston Trio’s Hungry Eye (1958).
Like I say, depends.