I had a topic about bluewallet here https://bitcointalk.org/index.php?topic=5458947.0 where omega mentioned that their lightening speed is non-custodial anymore. Does this mean the bitcoin and vault feature in their wallet is centralized and they can steal the balance still? Is it not that safe ad I thought vs trustwallet? Being open source but having the ability to use my private key is still risky. Pls clarify.