You can only do that on centralized exchanges, which would mean that you effectively doxx yourself by shorting. Also the exchange will most probably seize your funds before you are able to withdraw them.
You'd have to spend $30M per day in order to control 51% of XMR, and then you'd YOLO your life savings (which would have to be another couple hundred million dollars) on centralized exchanges without anyone noticing?
0x457|6 months ago
subsistence234|6 months ago