I’m the opposite: I migrated 2 4TB drives from my first NAS into the actual one. The drives are going strong and nearing ten years (!) of run time. Two out of eight drives died in this server since 2017. Both were newer. I’m not going to change a single disk before it dies. Most value for money in my opinion.
But I can afford this „risk“: My server has a redundancy of 2 disks. It has a local USB backup, is mirrored to two remote servers in different locations with local backups as well.
This is the correct answer. Don’t overthink this. Just go, have a look and that’s it. Tell everybody involved that you don’t have to proof anything if they ask.
I know people who could afford this house easily that walk around like a regular farmer. Sales people having regular contact with wealthy people know this.