No. It doesn't when you own the exchange. You can easily decimate the price by x10 if you are connected tk or own the 2 or 3 biggest CEX directly or indirectly. Then you close withdrawals and wait for more people to panic. The playbook is known for at least 5 years. That you still ignore it because it first has been only tested and perfected on Monero doesn't speak for the smarts of Bitcoiners.