For Pete's sake. Like I and a couple others have been saying throughout this thread, they're not worn down, they're shaped like that on purpose from the factory.

Here's an article about the practice if you don't believe me: https://www.purecycles.com/blogs/bic...hainrings-work

And here are some pictures of chainrings from other companies with shortened, flattened teeth for shifting. Rest assured that if they were not as designed, they would not post such clear pictures of the teeth online.