We know that because it was deployed to almost a billion devices without a problem. If there was a problem that affected even a fraction of a percent of people, it would have been all over the news given how many devices that is.
Edit: Thanks for the downvotes. If you disagree, please tell me why. Apple's deployment of APFS to iPhones was so flawless, most people probably still don't even know they did it.
Idk, most of the people in my life could probably lose data on their phone and never realize it. Especially if we’re talking about people with lots of duplicates of the same selfie, for instance.
You’re wrong. I’m explaining why deploying to a billion devices and seeing no public outcry means there was a problem, because the parent comment is trying to claim that maybe there was a problem and people just didn’t report it. My point is that with a billion devices, even rare edge cases end up reported in the media because rare edge cares still hit so many people that it makes it look like a widespread issue.
Edit: Thanks for the downvotes. If you disagree, please tell me why. Apple's deployment of APFS to iPhones was so flawless, most people probably still don't even know they did it.