Why has the pointe shoe been so resistant to change?

Avery Trufelman does an incredibly well-researched podcast on clothing of all kinds by the name of Articles of Interest. They did a whole show on the pointe shoe. You can check it out here: https://articlesofinterest.substack.com/p/on-pointe

I've seen the pictures of ballerinas' toes -- in this era of 3D printing is there no way to distribute the load up to where the foot widens into the heel?

While we’re on the topic, on the last year, NPR interviewed an expert who warned of lifelong debilitating injury (pain walking) that dancers developed by going en pointe too young. The woman recommended waiting until 15. But searching for this to share with dancers, I cannot find the interview now. Did NPR retract this?

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Speaking of shoes, can we please stop wearing leather shoes? They fit poorly, hurt feet, require polish, are bad for running when in a rush, and they shrink fast.