'Industrial' is actually not just a buzzword here; it is pretty legit.
Many users are also worried about the longevity of microSD cards compared to laminated paper or metal seed backups. I agree that these are safer than an SD card as they're more resistant to water, dust, radiation, heat and cold, as well as even fire (if using metal).
Foundation does use an SD card from SanDisk's 'industrial' lineup. It seems these are much more temperature resistant than other models, so you could bury them outside and stuff like this without worries.
They can work in temperatures ranging from -40°F to 185°F for extended periods of time.
So for my metric friends, this is from -40°C to 85°C. Operating temperatures; so it can be used outside in most places of the world at most times of the year, which is great!