

Who’s the one bullying and gatekeeping here?
I’m not a camera nerd either, but I recognize that there’s people that need professional hardware either for a professional use or an obsessive hobby (either photog or other electronics or optics work). If a cell phone is “good enough” for me, that doesn’t mean it’s good for a specialist. Just like pretty much everything else in life.
If enough humidity over time gets in there, the salt can start caking and forming larger crystal clumps. However, the salt itself isn’t damaged by that process and will work fine if broken back up and used in the quality you need.
A best by date here would be a notice from the manufacturer that the product should be shelf stable at least that long before “degrading”.