Much in HDD SMART reporting is irrelevant to SSD.
command line smartctl for Linux only reports on SATA SSD.
There is an NVMe command line tool (not installed) but it doesn't work for some or many NVMe SSDs.
So I'm mostly right.
Anyway, whatever you are using backups are important. There is always user error, so even if you are living in 1990s and using a magneto-optic disc (which I did use and seem to be near infinite liife and survive a washing machine), there are users. Arghh! That directory has the same name as in another path!
RAID certainly doesn't affect needing backups. We sold it in late 1990s as high availability, never as a backup solution. But you know that.
Now RAID rebuild times are silly, so now you need two and faster to make a fresh copy than rebuild? Back then we were using 2GB Ultra wide and fast 10,000rpm SCSI. Very noisy!