You are welcome, @smathews, and thanks for that additional context.

I do not believe it is possible (in a supported by Canvas way) to prevent using the "Media Recordings" option when creating an online assignment.

It is my understanding that the "Disable uploads to Canvas Media from the enhanced rich content editor" setting only impacts the ability to record media using the RCE and does not impact online assignments and the "Media Recording" submission type.

For current Canvas functionality, it is best to train faculty to not use the "Media Recording" option and instead use "File Uploads" (or "Text Entry") if the desire is to use Studio for submissions.

Any proposed changes to Canvas LMS and/or Canvas Studio functionality would need to be submitted as an idea.

-Doug