No, not "all of which". That benefit is one part of the story.

I assume you want to use the discs, right? The effort to swap between discs to watch a different one is not very far from the effort to copy your entire digital library. And you have to do the former every viewing, while you have to do the latter once every five years.

And it takes up hundreds of times less physical space.

Also your original argument was two parts. One, that's it's sisyphean. That's somewhat true except the amount of effort is trivial and the original discs will also start to rot if you wait decades. The second original argument made was about formats being deprecated, and that one is flat out wrong. The discs will deprecate before the files will. And the part about shelves not being a problem isn't true for everyone and often isn't true for big collections.

You are ridiculous. Taking a dvd out of a case is absolutely not on the same order as acquiring and maintaining (ongoing as purchases are made) a digital backup strategy. And there's an entire graveyard of file formats from the 90s you'd have to write software from scratch to decode these days so let's dispense with the notion that digital media formats are a settled matter.