>Everyone keeps repeating the claim that "most users don't care" but I think the more accurate characterization is "most users don't understand".

Certainly. But look at the people here on HN, who do understand. How many have them have stopped using browsers and OSes that ship EME?

The people that would educate the "average" user, that doesn't yet understand, are HN-type people. But while there is lots of hatred for DRM in the comments here, there simply is not enough interest in actually fighting it. It we did want to fight it, we wouldn't use products with EME and we would get our non-techie friends to do the same.