[majormajor]

> Those responsibilities are ostensibly handled by other business units, but that either doesn't actually happen in startups (what's a design team? we don't have one!) or would be smoothed by the engineering side having a basic foundation of the concepts involved, enough to understand the rationale behind UX stuff and challenge bad design before it gets in front of users.

Even more directly, someone has to operate (from the back-end, not as an end-user) the systems you build, and usability (or even existence of) tools for that is often terrible.