Did the article say it was shaky? Even if they didn’t use the iPhone image stabilization, surely they could adjust it in post-production so it looks good.

FWIW, The Criterion Channel is worth every penny. They have not enshittified one bit, and they do amazing work in curating, restoring and preserving older films. Not just classics like Kurosawa but more rare and obscure films too. They have themed collections that rotate every month. It’s like visiting an independent video store staffed by film scholars.