Yes, the ally bushes are designed to wear (and the shock bushing)before your shock eyelet. Have you checked that the shock bolt is torqued up ? If not, the bolt can move in the ally bushes (top-hats), giving a bit of play as the bolt should clamp tight against the top-hats. This is so that the shock bushing moves in rotation inside the top hats. Hope thats clear !
There’s some play, and a clunk when the wheel unweighted, from the top bush on my shock. The pin that runs through can be wiggled slightly, so what is the most likely cause of this- do the ally bushes actually wear and need replacing? Seems a bit odd because the holes don’t seem ovalised, there’s fairly equal play in all directions.