The incident with my Linux laptop was definitely not Docker-related, but the description of the issue sounds like it could still apply.

We didn't use Docker at work, at least not on the VMs that I was affected by. This one was a gradual degradation over time - the maintenance process would run fine, but after a while it would start hanging the machine. It really felt like the fs was only good for some amount of writes before the maintenance process got overwhelmed and would hang the VM whenever it ran.

I'm happy to see that things are getting better, but the reputational damage will take a long time to repair.

All that being said, I still use btrfs on my Linux laptop, but I've also become more conscientious about backing it up.