Hired for ultimately a fairly narrow field of expertise. But do need support in the sense of building the right thing, ensuring that thing aligns with business objectives, that constraints and requirements and customer needs have been communicated.

So in that light - either you give engineers the support they need (which can be quite a lot, more than I think most care to admit), or accept they're going to get a lot of stuff wrong. Probably technically correct and good, but still wrong.