RapidWeaver runs only on Mac’s, that’s going to limit your viewing audience to a very small percentage of the population.
Technology changes drastically and very quickly. Look back just ten or fifteen years ago. No one had smartphones, and most computers were running Windows XP, no kindle readers and tablets not even a dream yet.
If you built a RapidWeaver project just a few releases ago, it wouldn’t even open up in the latest version of RapidWeaver.
A website using the latest technology available fifteen years ago may not even load on mobile devices. I would bet that ten or fifteen years from now things built today will be obsolete as well.
Don’t forget all the different technology platforms, macOS, Windows, Linux, iOS and Android. That’s just what’s popular today, think backward ten years, iOS was new, and androids didn’t exist but now the two combined account for over half the worldwide web traffic.
If you’re old enough and still have any laying around grab an old 5 1/4 inch floppy disk and hand it to your grandchild to read. Nothing you build with technology is going to outlast a printed book.
Yes, websites do have to be maintained and can quickly disappear as fast as they appear, but one advantage is they reach a vast audience with a single source.
The only thing right now you can count on to last for generations is still the printed book. The closest thing would be ebooks. You can do most of what you’re saying, interactive, videos, and more with the latest ebook publishing technology. But RapidWeaver isn’t the tool for that; it’s a web builder, not an ebook publishing engine.