I also support CZ in this situation, he always wants the best for the market and maybe he disagrees with what FTX and alameda have done in the past. Alameda is notorious for playing dirty with projects, devaluing the projects then trying to buy them back cheaply and this time paying for their manipulation.
I can't really take sides on this as i don't know what's happened behind the curtains for CZ to do this.
He must have known it would wreak havoc inside FTX community if he said anything about the exit, so one could only speculate why he chose to be "transparent" and and the same time hinting wrongdoing from FTX crew. That doesn't sound something that's bringing people together. In fact it divides people to camps.