If that's what came out when the oil was changed, wouldn't you be concerned that there may be additional debris left inside? Debris of that size obviously won't make it past the mesh filter, but it should be of concern nevertheless. Imagine leaning into a right-hander, the oil level in the crankcase spills into the bottom of the clutch housing carrying the suspended debris with it, and the rotating clutch assembly picks up the debris and spits it into the gearing. Perhaps not likely, but absolutely possible.