There is a level of assault ON the public's rights happening. They arent completely innocent content creators being robbed, having done nothing wrong.
It smells less of entitlement, and more of intentional comeuppance.
It's not just hypothetical. In our family we subscribe to 3 or 4 streaming services, but last year we still had to pay $5 to watch It's a Wonderful Life (1946), a movie that was literally in the public domain for 20 years. A Charlie Brown Christmas (1965) wasn't available at any price, except with ads that stretched its 25-minute runtime to nearly an hour. We pirated that one. I don't think most people would think there was anything wrong with that.
You're probably right for everything produced since the second World War, but I doubt people think that e.g. Triumph of the Will is under copyright. I think people have a vague notion of "historical" vs. "contemporary" that starts right around the end of WWII.
My point is there's plenty of good content people want that's 30-70 years old & they don't feel bad about pirating it. My dad by his principles would never download a new movie; nevertheless he's looking up the songs from his childhood on YouTube. He feels entitled to listen to them whenever and however he wants. I think that's a pretty common attitude toward the older stuff.