2 I recognize, 1 not so much. Patents are usually filed as early as possible, because you risk losing priority to someone else. And you cannot file a claim on inventions that are in the public domain.

But then it takes a decade or so to develop towards approval. You work together with outside researchers who lend their credibility and get attractive publication possibilities in return. Those publications also help to raise awareness with doctors and investors. Since some company researchers are also authors, this does indeed work as an incentive and is helpful for recruitment and ultimately more successful products.

To the core of the article: why would anyone want to file a patent with AI as a (co-)inventor? It's a tool, and it cannot have any ownership rights. And even if it did, it would diminish your share of royalties.