At the Start of a Day, Can You Auto-Create a Note Against a Recurring Event?

Your best bet is to use the new template feature in combination with the Shortcuts app on iOS and iPadOS, which now also can be automated to do things on a scheduled basis like every morning. See the following How To articles:

and the Shortcuts section of this community.

On Mac the Shortcuts app is not available alas, but there the same thing could be done through the combination of x-callback-urls and AppleScript for example.