I asked a very specific question - can I override files located at /cornerstone/includes/views/ by files in the child theme, like with framework folders or not. What you answered is not helpful at all, I'm not asking you to do the modifications - I'm asking if the same customisation method written on your support articles applies to these files also. I've already read the page you mentioned and because of that wrote "Adding a custom element is not appropriate." because I knew you would link to that.
I'd like to rewrite /pro/cornerstone/includes/views/partials/bg.php