It’s the conspiracy theorist mindset:
They’re people who wish they were smart, and can’t handle that they’re not. So they latch onto ideas that most people agree are dumb. Then use that to convince themselves that they’re super geniuses who have realized the truth of something that even scientists couldn’t figure out.
Then when they’re challenged with evidence or facts, they double down and start insulting or even assaulting people in response. Because they don’t see it as evidence in an argument, they just think the other person is calling them stupid and that really strikes a nerve.
TL;DR: They’re in denial and project their own self-hatred onto others.
Then later they almost shut down their entire consumer film production because of digital cameras. So they were right in thinking it would massively impact them, but made some very wrong choices because of it.