Similar experience for me. Four 2TB 980pro in RAID-Z2. Since introducing the drives in August 2021 I've had to replace them five times. I think none of the original SSDs are left. Only between 5 - 25TB written on average. Usually individual uncorrectable errors caught by ZFS, but one drive just straight up died. I keep a cold spare these days. On the bright side, if the cycle continues, I'll never run out of warranty from Samsung or the vendor.