It depends on how the glitch occurred, and what caused it.

Theoretically, any glitch would be 100% repeatable, if the same circumstances existed. This is why there are members of the speed running community called "glitch hunters" who just experiment to find ways to exploit the game's code to create odd effects which can, hopefully, be used to make the game faster.

But, not all glitches are dependent on the game itself. The game interacts directly with the software operating system of the console, and a glitch in that system could affect the game as well. It is even possible that a glitch is caused by the combination of several different effects which combine to have a notable glitch.

Further, no two pieces of hardware are ever exactly identical, which is why tool assisted runs frequently have to be paired to a particular console in order for their frame-perfect inputs to succeed, as even a minute difference in hardware that is completely undetectable to humans playing or even analyzing the game bit by bit can desync something that requires ultimate precision.

So, yes, every glitch should be repeatable to everyone, but only if we know the exact circumstances under which it occurs.