Not really. A 4K movie means nothing to 99% of people. Is it 4GB? 40? 400? How many can my phone hold? Or my computer?

This only makes things more understandable if you use a point of reference that everyone you're talking to is familiar with. The fact that they had to then explain how big a 4K movie is in the article clearly shows that even they know that this doesn't help people. It's just a big flashy number.

Just for context, I'm a writer, I understand the point of using these abstract measures to give a frame of reference. But in this case, just giving the capacity in GB/TB would have been easier to understand. It just wouldn't have been as sensational of a headline.