Never underestimate the ability of “clever” people to overcomplicate things. Let’s Encrypt has all the information it needs from prior API calls during the provisioning process to issue the certificates (RFC 8555 § 7.4) and yet still asks you to package the exact same information in a CSR request encoded in an archaic format and thus complicate the process/clients unnecessary. They might as well ask you to include a photo of the request too for all the sense it makes.
*smh*
@blacklight447 More like the first ones who did ;)
nothing wrong with that, just make sure you get a competent third party to audit your math model and code.