PDF is so bad for representing text that when you tell people about it, they think you're trolling or wrong.
All other use cases of PDF are better served by other formats.
Given that PDFs support fillable forms, scripts, video, 3D objects; it is a massive error that at no point did anyone think to have some plain text equivalent field or something like that. It would be pretty darn simple for most generating applications to produce one of those.
Yes, I know it was largely meant as a preprint/graphics format, but clearly it hasn't been just that for a long time.
If that were the case, we would all be using PDF/A, or better still a subset of that. The fact that PDF has much more stuff in the spec than that suggests that a large number of people find PDF to be the best format for what they're trying to do.
Or they just don't know any better. I could certainly see this being the case for many office workers.
More clarification of what I mean, in the form of a dangerous conversation:
OfficeCorp Exec: Hey adobe, you know what would be great! Fillable form fields! And dynamic stuff!.
Adobe Sales: Great! Wonderful feedback, we can do it!
Edit: Fix tone. Or try to. Maybe I'm just overthinking what I say?
Compare it to XPS to see what it should have been.