You'll be shocked to learn that Robinhood also collects interest on your cash deposits and charges interest when you borrow money on margin. And gosh, other brokers like Fidelity also often route orders to Citadel. They're filling orders at the advertised prices, and following your limit price, are they not?

You could cry you don't like their prices or you think another broker offers better transaction costs, features, or fees, but talking about "trust" is a baseless smear.