What is it about torrents that are specifically difficult for grandmothers? I've used several torrent clients and none of them asked me my age or gender, much less whether I had grandchildren.

The problem is that you need to show them how to transfer the video to their computer, how to create a torrent for it, and how to send out the magnet or torrent link/file. I would never be able to get any of my grandparents to follow and remember any of those steps, let alone teach them why they need to leave their computer on for me to access it. The entire process is painful. I can teach them to upload to Facebook or YouTube easily. Torrents, not so much.

That may be true of your grandmother, but what makes you say it's true of grandmothers in general?

How is that a problem? Nothing is stopping people from seeding their content themselves or archiving it...

Yes, but it relies on people actively doing so. For example, look at the following torrent of the 2012 Olympics Opening Ceremony in 3D [1]. Yes, it is an illegal video copy, but a video that there are no legal ways to access anymore. This torrent has no seeders and because I don't have a copy, I therefore can't seed it.

[1]: https://thepiratebay.org/torrent/7487775/2012_Olympics_Openi...

How is this going to be a problem if the owner/publisher takes care of the seeding (i.e. they run a seeding node instead of or in addition to serving the content the traditional way)? IP laws have almost nothing to do with the way the content is delivered...