> misrepresents progress in the field

Can you point me to some examples of unsupervised learning with similar results? Not asking for rhetorical purposes; I just genuinely was shocked by how compelling their results were, especially given this was unsupervised.

> OpenAI's behaviour here smells of Gibsonesque 'anti-marketing'

I don't disagree that the ethics are questionable, but I think it's highly speculative to suggest that they didn't release the full model purely as a marketing ploy (I'm assuming this is the main objection to their marketing "tactics"). As you say, it "smells" this way, but I fail to see how it's really so clear-cut.

This isn't my impression.

It's not the best in many domains but it a single network that is moderately decent in many domains. You can use it to summarize by adding TLDR to the end of text. You can use it to translate by listing previous translations. And of course it does blow away any state-of-the-art RNN text generation I've seen. RNNs tend to fall apart after 1 or 2 sentences where as this holds it together for multiple paragraphs.