When you know there is a possible problem, it is easier to take care of it and avoid something.

If they sold nearly/over a million bikes and it "only" happened to a few people, it is not such a black picture. BUT. One injured person, is already one too many.

Better be safe then sorry and have it checked out or part replaced.

As for us, I know my husband is very meticulous about checking those skewers when he puts the wheels on our bikes and he tells me why and it is mandatory for me to check it out often. In case. Maybe because he's a mechanic and tends to see "danger" where I have no clue it may exist.