Headline's a bit misleading. They've never permanently lost a bag, and well done to them for that, but they've certainly lost them for periods of time. Just eventually found them.
yeah, I've seen this being tossed around, but they definitely lost MY BAGS. Eventually I got them, but they were lost for 5 days or so.
the article does not discuss what you are saying, do you have an alternative source that tells this true story?
Permanent losses are pretty uncommon in general. Good for them for minimizing but having bags on the next flight or delayed for a couple/three days is way more common. Probably would have to be stolen which is rare, especially in Japan, I assume or end up in some weird location without a scan.
Was flying into Narita once and I had checked luggage in part because I was carrying an award for a Japanese customer. I was sort of given a "we'll get back to you sooner or later." At which point I explained the situation to a supervisor I think and was much fluttering around and got the bag the next day.