Not to be deliberately argumentative but still no concrete examples of zfs failures are shown, just hand wavey "I had issues I couldn't google my way out of". I've never heard of a healthy pool not mounting and I've never heard of a pool being unhealthy without a hardware failure of some sort. To the contrary, zfs has perfectly preserved my bytes for over a decade now in the face of shit failing hardware, from memory that throws errors when clocked faster than stock JEDEC speeds to brand new hard drives that just return garbage after reporting successful writes.