You missed the point. The anecdote was to illustrate how even power users might be working around filesystem bugs so a lack of bug reports specifically mentioning APFS is certainly not proof that there aren't problems.
It's also quite hard to report fs issues. I ended up one day with a not working apfs system. Boot was ok, but I couldn't mount the user partition. Apfs repair tool just failed and made the system hang. After a number of restarts, attempts at repair, and attempts to move the partion somewhere it can be decrypted, everything started working. And I actually had enough experience to try and debug/fix it - many people would end up wiping the system, or having to go to Apple shop.
This is not reportable. I got only a generic error or hanging system. I can't reproduce it. I don't know why it started and why it finished. Yet, it was almost certainly an apfs issue.
Even if I wanted to play, my priority was to get the work laptop usable again.
That's reasonable. I assumed that it was an assertion of evidence of an issue, not an example of how issues might theoretically go unnoticed. Upon rereading it does not appear that either is implied.
