Earlier quoted context omitted.
What do you mean by layer of trust? Bitcoin is definitely not "trustless" its trust minimized for sure. Lightning also minimizes trust in a very similar way. As a user you don't have to make any more assumptions when using lightning than you do already using the bitcoin base layer.
With bitcoin you can send funds peer to peer. No trusted intermediaries. Routing through a network of exchanges is more like routing through SWIFT or ACH.
If an intermediary is not behaving, the worst that can happen is that your found are blocked for a small amount of time.