Slapping Synology stickers on Seagate drives doesn't make them magically immune from being mislabeled out of refurbishment.
This is the same old tired argument Apple made about iPhone screens - complain about inferior aftermarket parts while doing everything in their power to not make the original parts available anywhere but AASPs. Except here we have the literal same parts with only a difference in the firmware vendor string.
Honestly, you should just buy used enterprise drives. That they have hours on them is actually an upside, since most drives die either very early or very late into their expected lifespan. Our NAS is all Exos drives, no problems.
On the other hand, an NVMe drive from Crucial that lied about syncing data caused a write hole in ZFS and the associated pool broke to the point where we could only mount it with lots of flags in read only mode.
This is the same old tired argument Apple made about iPhone screens - complain about inferior aftermarket parts while doing everything in their power to not make the original parts available anywhere but AASPs. Except here we have the literal same parts with only a difference in the firmware vendor string.