I take it as a bullshit because the only way to control Bitcoin price is you need to own all Bitcoins, while FTX isn't own all Bitcoins.
No you don't need to hold the whole Bitcoin to manipulate the price. You just have to hold enough quantity to be able to detect how the price move and FTX had alot of users funds. The market can be easily influenced, it's full of inexperienced traders, they'll always follow the market trends that's why when Bitcoin starts dumping the market react by been bearish. People starts panicking and selling and that's where whales take advantage of the market by manipulation it. They can decide to sell a large quantities of Bitcoin to trigger the price declining.
It would have been nice to know how it was done or how they planned to do it, that is the plan they conspired on to keep the bitcoin price under $20,000 when they did not own all the bitcoins. It is not just possible that she said this if her and SBF had never discussed about this, so I do not totally consider it as a bullshit talk.
If so, then all these companies stacking Bitcoin can make it pump too. I don't believe this, the reason BTC fell so hard was because of fear. People kept selling in other to avoid getting sink along with the ship. Not all cex has time manipulating their users funds like FTX did
What causes fear in the market, isn't it the decline in the price of Bitcoin so if an exchange can make the price of Bitcoin to stay below a particular price it'll cause fear among traders and they start selling to secure their profits. CEX manipulate the price on their exchange by either creating false sell others and it trigger stop loss of traders. We can't verify her statement but this puts more merit on the saying that CEX are manipulating the price of the coins listed on the exchange, maybe with Bitcoin it's very hard but with altcoins it's a piece of cake.