The fact people are getting credited in fiat, be it from Mt. #Gox, #FTX, or any other #CEX should be enough to make everyone stay away.
If you use a CEX, and when this happens to you, you won't be part of the 21 million club. The #Bitcoin on the timechain will not be assigned to you in any way. You will be given fiat.
In the case of FTX, they were given fiat value from a year prior, THEY LOST value compared to where BTC is/was at time of crediting.
Not your keys, nor your coins.