Who said interpretability wasn't necessary?
Manuals, laws, and dictionaries are not designed to be read, but they are designed to be interpreted. In fact interpretability is what they maximize for. And interpretability isn't an absolute value, it is relative to an audience, this is why household equipment often comes with separate owners, installers, and service manuals, and why Webster publishes Elementary, Collegiate, International, and Mass-Market versions of its Dictionary.
Documents that are "meant for human consumption" in the way the top comment intended generally don't optimize for interpretability like code, manuals, and dictionaries do. Novels, letters, emails, internet comments, blogs, articles, nonfiction books, etc often forgo interpretaiblity for practical, expressive, or rhetorical effect. The best moments of these is even when they are confusing on purpose, because imprecise language is a gateway to deeper levels of meaning through fourth-wall breaks, metaphor, analogy, and humor. (all things that LLMs are notoriously bad at and don't seem to be improving on over the years)
Those other types of writing are intended to be read in full, every word, end-to-end, in order to educate, entertain, inform, or influence the reader who, and i think this is the critical part, does not drive the experience.
When I'm reading a news article, and you realize that you're reading the voice of chatgpt, I'm annoyed because it means that i've been strung along by a stupid machine that somebody else handed me off to to keep me occupied.
When I'm reading code, and I notice that it seems AI written for whatever reason, I might then choose to apply more scrutiny, maybe I try to suss out what the prompter intended to happen, so that I can validate whether that actually happened and if it was accomplished in an optimal way. But it's not insulting in the same way, because I'm still in the driver's seat of the experience, deciding on my own which parts to read and which parts to ignore as irrelevant to my investigation, because the only thing I want to get out of it an understanding of a part of the mechanical system that the code creates.