I don't really have the exact timeline of the events happening at and with FTX at the top of my head right now so i can not really say if this tweet of him was made when it was already clear that FTX would go bankrupt or if this happened still before that. No matter when exactly this tweet was made it still leaves a very sour taste to everyone that is involved in the crypto market. The people that were hit the most were obviously those that were invested into FTX or that had funds at FTX. Most of those people lost all of their funds. This is something that can ruin the lifes of people and to make such a tweet then is just a very bad taste.