It's the exact opposite; TypeScript discourages complex interfaces by making them explicit. It's far too easy in a dynamic language for devs to introduce absurd

It's the exact opposite; TypeScript discourages complex interfaces by making them explicit. It's far too easy in a dynamic language for devs to introduce absurdly complex interfaces without understanding the cognitive load it's imposing on other users. In TypeScript, they're forced to type it...which immediately reveals that complexity - if they're able to do it all! This isn't theoretical; the only reason TypeScript allows for such complex interfaces is precisely because JavaScript devs have created those interfaces, and TypeScript makes a best-effort to make as much JS code type-able as possible.