@Mustangman I agree. Assembly processes are so squeaky clean now that there is little or no harmful debris found in a new car. On the other hand if you let a shop rebuild your engine there will no doubt be some debris and an early oil and filter change will be in order.
The last time I had internal engine work done (rings and valves) was in the summer of 1964 on a 1957 flathead Plymouth engine. That “overhaul” cost me all of $65 at the time when $5 would fill the tank with regular. Since the rest of the car was starting to rust I told the shop not to “rebuild the engine”.