How do I work around Vercel's 4KB Environment Variables limit?

Did that FAQ tool really suggest encrypting data using an online tool, not even from Vercel themselves?

Baking environment values into the actual deployment artifact also doesn’t pass the 12 factor smell test for me, but I may be revealing my lack of knowledge of their architecture / process here, maybe this is how they get repeatability.

> The file containing the encrypted content will then be added to the Deployment

I don't think this is a good idea. Please convince me otherwise.