i have never had a problem with the filesystems.
On OpenBSD 6.x, after power outage/intel drm kernel freeze I had catastrophic data losses. This is not acceptable for me on a desktop/workstation OS. Linux FS stability is better since the 2.4 era in my experience.
It's pretty annoying, to say the least. But OpenBSD is such a fantastic system overall, I keep using it, and just wait for them to adopt a journaling filesystem. (And have good backups.)
Now that softdeps is disabled and the vfs getting an overhaul I might try it again... in a few years.