Well, make sure not to use QLC at least.
Also, you actually need the SSD to rewrite the data to the cells, the drive's firmware will do this if it is left powered on but it cannot if it is just plugged in, written to, and then unplugged. Wear leveling will probably help some, and I wouldn't be worried using one as a medium term backup drive.
The older, larger cell, flash memory was actually much better in this regard and I would still recommend a hard drive (stored in a Faraday cage) over a SSD for long term unpowered data storage, they are cheaper too.
I will added that for storing bluray for a long time consider M-disc or similar technologies, they really do have more stable materials for storing bits compared to the normal organic dyes of a standard BD-R.