My wife and I were doing big renovations on our home and were dealing with lots of contractors. I would email them and include my wife’s email. Yet every contractor failed to press reply all when responding so my wife was constantly left out of the loop
It turns out people just don’t care to think about or understand basic technology.
This stuff really needs to be taught in school (like how we used to have typing and business communication classes)
Have you considered your local library? A lot of them have an excellent dvd/blu-ray selection especially when it comes to documentaries.
I know it is a little more work but you also get a lot more control of how you rip it.
Also, in the US, many libraries give you free access to the Kanopy streaming service which has a lot of documentaries on it.