APFS too, with what seemed to be a smooth rollout.
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The APFS switchover wrecked a lot of people's drives, and AFPS is slower than the filesystem it replaced. I wouldn't hold it up as an example of Apple software initiatives that are shipped fully-baked.
Do you have source for that? I can't find any reports of widespread problems.
The speed wasn't the part I was impressed with, it was the ability to do in place upgrade of a filesystem on millions of devices without any massive amounts of problems.
I find that to be a tour de force.
While I'd prefer new filesystems to be faster than older ones, I understand that improvements don't always come in the speed dimension: it can also come in the integrity/data loss one.
You can run your filesystem without write ordering, cache enabled, and no-op for SYNC/FLUSH, and it will be very fast, but you will risk data loss.
It seems reasonable to me to trade speed for integrity.