Can I ask that you show me the proven science that has been researched, tested, evaluated, peer-reviewed and accepted as fact (not heresy) that film will be entirely useable in 30 years from this date.

Better still, roll out the film stockpile that you ferreted away in 1980 and publish your findings.

Until we are better informed with science, and not populist opinion, then, and only then, talk about what film will be like a few decades from now.