I am a bit prod of having seen the original post looking for volunteers to build a Kool Desktop Environment. I was obsessively reading Usenet groups at the time. And I remember there were quite early betas published, I did not run them at first, but I remember much enthusiasm about it. So I feel familiar with the beginnings although I never participated in the project development-wise. All the way up to KDE 4 I was quite close to the project as a user. But since KDE 4 was so unstable and buggy, I left it around that time. This is also around the time when the documentary makes a big jump ahead chronologically.
I feel the documentary explains less what happened the last 10-15 years. I recall Trolltech and Qt underwent a series of acquisitions. How is KDE and Qt developed now? Who are the main contributors and sponsors? Any big backers? This information I felt missing.