This argument is whataboutism at its worst. He's not suggesting that we ignore healthcare and individual diseases. He's suggesting that we stop ignoring aging (and death in general) and take it seriously. The problem of medical patents and treatment distribution in the developing world is indeed a big one, but it's a political/economic one completely unrelated to the choice to ignore the biggest disease humans suffer from.
>> He's not suggesting that we ignore healthcare and individual diseases.
He is absolutely advocating that we do exactly that. He believes that halting ageing will cure every other disease and make people live longer, healthier lives. Therefore he's arguing that we should spend the majority of resources spend on health to combat ageing.
My other post, above, replying to chroma quotes the relevant passages from the original article.