Also, would this act any differently if you had content in a modal which was the turbo-frame?  For example, I have one modal for the page, and N number of elements on the page and when I click on one of those elements it opens the modal and updates its content based on the specific element?

In your example app, for instance, what if clicking on a comment brought up a modal with, say, the comment's author ? (just as a concept)