On the culture side, I don't know of any major films that capture computing culture. Charles Stross's Laundry series does a better job than most (You can still read The Atrocity Archives without a backround in computing, but you'll get this nagging feeling you're missing something), seeing as Stross is up to his eyeballs in computing. It's also the first piece of fiction I know of to reference Symbolics. And of course, the protagonist's name is Bob Oliver Francis Howard. Because that book just couldn't get any more in-jokey. But, you know, in a good way.
"You" and "Daemon" also capture bits of computing fairly well.
While a wholly inaccurate portrayal of hacking or even computing, it did contribute to my fascination with both.
Going back to your point about being angst: if it's any consolation, that's how I felt as a teenager as well. I didn't come across your manifesto until quite some years after it was written but it definitely resonates with how I felt at the time as well.
"We write those scenes to be inaccurate and ridiculous on purpose.
I'm a young writer in his mid-30's, computer and game savvy. Lots of us are. I guess you could call it a competition of one-upping other shows to see who can get the best/worst "zoomhance" sequence on the air. Sometimes the exec producers and directors are in on it, and other times we just try to get bits and lines into scripts.
90% of our TV viewing audience will never know the difference and honestly, we love it when threads like this get started and love reading the youtube comments. "
https://www.reddit.com/r/gaming/comments/f2i7t/ive_written_f...
The comments on that thread link to a lot of ridiculous moments of IT movie/TV history.
(My google-fu is strong today.)