I also think the offer to buy FTX was motivated by a desire to avoid a broad crypto collapse which would hurt Binance along with everybody else. But that offer had to be withdrawn because things got so bad.
Now everybody involved is worse off than they were before, a lot of customers might lose money, and there is a pretty good chance that regulators and governments are going to get more involved in the crypto market in response.
If this was planned in advance, it was not 4D chess, it was just a really bad plan.