Kino
Subscriber
Don't forget to archive a Blu-Ray reader/writer. That's the problem of Blu-Rays and other physical media...A very rational approach.
Most online discussions of this sort tend to involve posters with fundamentalist attitudes on one side or the other.
My backup approach is similar to that you describe. I am a hobbyist/enthusiast so my process is less complicated but I do save all my negatives and slides, scan all of them and save them on my hard drive, a portable hard drive, Time Machine drive, Carbonite back-up and multiple clouds. Occasionally, I write important files to recordable blu-rays which should survive an electromagnetic pulse. I figure that any disaster large enough to wipe out all those sources would be unsurvivable.