Informed analysis like lack of forward secrecy in something made for non ephemeral communication - for storing, sending files, digital signatures etc. Or backwards compatibility so you can access and verify your backups, archives etc. from 10 or more years ago.

Show me ephemeral encryption scheme for something that needs to be readable in the future like that.

This analysis is highly uninformed I would say.

It’s not an informed analysis, or even an analysis at all.

That’s not how analyzing algorithms or programs work. Even a basic threat model is missing.