Obligatory comment every time one of these threads comes up that Synology, sure, the hardware is a bit dated but… as far as set and forget goes:

I’ve run multiple Synology NAS at home, business, etc. and you can literally forget that it’s not someone else’s cloud. It auto updates on Sundays, always comes online again, and you can go for years (in one case, nearly a decade) without even logging into the admin and it just hums along and works.

Until you get the blue flashing light of dead. Luckily I was able to source an identical old model of eBay to transfer the disks to.

What makes you think that Synology hardware is special in that sense?

Most quality hardware will easily last decades. I have servers in my homelab from 2012 that are still humming along just fine. Some might need a change of fans, but every other component is built to last.