What has caused content served via JS to not be indexed by Google?

This is a question about Search Engine Optimization in the other direction - How can I make some content non-indexable without otherwise impacting the site?

I'm toying with a project to obfuscate content from AI on sites served via CDN. My current plan is to have javascript de-obfuscate the content on the client side, but implement in such a way that indexers won't be able to render the content. This does assume that AI content indexing and normal search engine are essentially equivalent, which I think is at least a good place to start. I'm pretty confident that I can multiply XOR encrypt the contents, using one of the network security obfuscation techniques, but that is running a race with the indexer for how much CPU it's willing to dedicate to the page render.

So the question I have for ya'll is - Have you found any JS that renders content that failed to be indexed? If so, how did the JS work?

submitted by /u/Hackalope
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