Cramer's piece intrigued me, so I did some more digging and found this https://www.bloomberg.com/view/articles/2018-02-09/inverse-volatility-products-almost-worked
...If you think that a certain market move should make your instrument go up and it makes it go down instead, I'd say you don't understand enough to be invested in that instrument in the first place.
Sometimes an instrument becomes unpredictable (especially as you age). But so what? Just because you can't predict what market move will make the instrument go up or down you think a person shouldn't be invested in that instrument? What are the options? (I don't really want to know).