FWIW I bricked a very cheap consumer SSD by using it as write log for my ZFS array. This was my experiment machine, not a production server. Fortunately I had

FWIW I bricked a very cheap consumer SSD by using it as write log for my ZFS array. This was my experiment machine, not a production server. Fortunately I had followed accepted practice of mirroring the write cache. (I'd also used dedicated, separate host controllers for each of these write-cache SSDs, but for this cheap experiment that probably didn't help.) So yes this really happens.