It is remarkable that most organization try to "fix" this by teaching everyone to present (i.e. sell ideas) better, rather than teaching people how to better listen and evaluate new ideas.
It's because a lot of engineers are horrible communicators. Not a surprise, and not their fault - it's never been part of their training, how would they be good at it?. But it means that often, the way they present ideas is at best only understandable by fellow engineers with experience in the domain. And often not even by those.
And that's what most corporate presentation training I've seen focuses on - how can you say what you want to say more clearly. (And, equally important, how can you deal with the stress of being on stage in front of a set of people).
Presentation is rarely about "selling", but about communicating an overview concisely and cleanly.
(It's also incredibly hard to teach salesmanship. It requires a lot of charisma and empathy, and that's not something you teach in an afternoon or two)
It then follows that everyone has to be taught presentation skills, just as they're taught evaluation skills.