I stand corrected, and that's an important segue - even if Grandma is an options bro, her losses are limited to the point at which she would get margin called.

Overall, none of us should worry that the implementation of an inverse ETF is somehow going to pass the MOASS bill to the general public. I found this yesterday which discusses the order of who gets the bill: https://www.reddit.com/r/Superstonk/comments/nnbbsj/clearing_up_misconceptions_about_the_70_trillion/

As you said in your post (which is a must-read, I enjoyed it), the reasons for an inverse ETF aren't entirely clear, but we do know it's not going to enable SHFs to pass the buck to ordinary investors.