glitches dont ruin anything. IMO its just a tactic. A good one even.
Its not like you typed up a text doc and ran it through Ocarina or wiird, you actually excersised the dexterity to discover the glitch, and utilize it.
Sure if you dont know about the glitch it can get annoying being shot by ghosts, but anyone whos familiar can easily destroy a player glitching as they have nowhere to go.