I've got WD drives with like 10+ years of power on time...still works. All, and I'm not joking, of my HDD failures have been seagates. I lost 4 drives and the 5th and final seagate I purchased, started showing errors just a year into its life. Haven't bought one since.

Probably a good candidate for drive shucking. Can get a good, potentially enterprise grade, hard drive for cheaper than the drive alone would cost. Then stick it into a NAS.

Actually, large drives like this make perfect sense in RAID arrays. Just make sure your using at least RAID 6 with drives this big - the rebuild times are scary long. I run a mix of 18TB drives in my home server and the key is having a solid backup strategy, not avoiding large drives. No matter the brand, always assume any drive will fail.

Is this model from seagate prone to fail?

If it means anything, I have been using Seagate Ironwolf HD's in my NAS for years now after having to switch to them when HGST went under, and I have yet to have any issues with one yet. I think I have 5 right now.