As long as people can manipulate the market, they will keep on doing that, there is no reason for them to stop. All those tesla deals, grayscale deals, apple news that is yet to be confirmed, all the news you hear about this buying and that selling, everything reflects on the price and I think you will keep seeing that forever.
As long as there is no regulation any huge investor can manipulate the market, even in the stock market there are insider trading and other manipulation that are exposed and the authorities have strict rules and regulation to counter that but in the cryptocurrency market there is no such rules and hence you should expect these big fund houses manipulating the market.
Tesla bought bitcoin and Elon talked about how great bitcoin was, do you think that was just coincidence? He manipulated as well and made hundreds of millions of dollars in profit. As long as people can do that, they will do it.
Elon Musk is making some waves in the market for a long time, he was having a good time shilling for Doge for a long time and now when his company invested billions in bitcoin he knew how to make some waves and that made a huge difference in the market.