They can say that they are good, safe and careful in management of their company treasury and customer fund as well as don't misuse customer funds without agreement of users.

But only God can know what they are actually doing. FTX and Sam Bankman-Fried said everything were good, Terra and Do Kwon told the same, but both FTX and Terra collapsed very quickly.

Trust Bitcoin Spot ETFs if people distrust accuracy and importance of "It is not your private keys, it is not your bitcoin!"