Oh yes the duplication tutorial on https://www.inaturalist.org/pages/video+tutorials. Your link to it didn’t open for me. I watched that one yesterday, but I didn’t like it because it assumes you’re duplicating a single photo observation in order to change the subject organism.
Your explanation is thorough. You might want to throw in a phrase such as “on the website.” I believe most of the multi-species observations are created by app, and many app users actually have no idea there is a website.
The way the website uploader is set up, it is more conducive to the opposite problem.