Those sort of errors cause all sorts of more serious trouble in another way:
Men finding out they didn’t father children they thought they did.
I worked at a genetics lab, and day one training was that this happened all the time, and that we absolutely must not let people in medical studies know we’d found a mismatch. (In fact, we actively avoided noticing such things.)
Yes, but in this case what would happen would be mothers (or the children) actively searching for the dads, using those forensic genealogy techniques. The key of course is that the dad's DNA is not required to perform the search.
Men finding out they didn’t father children they thought they did.
I worked at a genetics lab, and day one training was that this happened all the time, and that we absolutely must not let people in medical studies know we’d found a mismatch. (In fact, we actively avoided noticing such things.)