I can't comment on its server use cases or exotic workstation setups with RAID, NAS, etc. but I've been running Fedora on Btrfs for quite a few years now and I've had zero issues with it. Am I deliberately using all of its features like CoW, compression, snapshots...? No, but neither would your average Linux user who just wants something that works, like ext4.
I don't miss ext4, Btrfs worked for me since day 1.
Fuchsia gang where my boys at