Metadata descriptions. Can AI write them for you? TL;DR – No

"Copilot understands your business. You’ve taught Salesforce your business with metadata –  with custom fields. It knows that there is a “High Value” custom field. It interpreted that."   John Kucera, SVP Product Management, Salesforce

Metadata descriptions are critical.  This article gives you the 'cheatcodes' on documentation and AI.

https://elements.cloud/blog/metadata-descriptions-can-ai-write-them-for-you/