I've come back to this thread a few times mentally, trying to figure out what I think about the questions raised. Here's what I have:
Podcasters and bloggers who post clickbait titles like "Aiming is useless", "You're doing it wrong", or even "Things more important than a sub second draw" shouldn't be surprised or get butthurt when people challenge the conclusion or the premise. After all, don't we want to think critically about the really important things in our lives? Even if it's wisdom from a world class SME, I would hope that critical thinking is encouraged. That's how we arrive at a better understanding of a nuanced question.
Sub-second draws: I agree with @jlw and Bryan Eastridge. There are so many more important things than a sub-second draw. And, trying to achieve a super fast draw before the rest of one's skill has developed sufficiently is counterproductive. Spastic, tense draws (even if they are fast) are not helpful to fast, accurate practical shooting.
However I also agree with @JCN that reliable, relaxed sub-second draws are often correlated with other high level skills. I think this part has been a valuable discussion.
But what should someone with a 1.5s draw do if they want to improve? I think that practicing a broad set of handgun skills is the best approach. Focussing on speeding up the draw might occupy 10% of training time at most.