There's a spectrum, right?
On one end of the spectrum you've got presumably you, who brings a sketch or prototype to engineering, and has a reasonable discussion about what can or cannot be made production ready on what timeline, with what budget.
On the other end you've got people who bring a half baked prototype to a couple engineers, demand it be in production next week, and then escalate and make a big scene when there's pushback.
No engineers tend to complain about the former. The latter is stressful as hell
A useful middle of that spectrum is when the person bringing the prototype also brings an understanding of what the Stakeholders need quantified it, and quantify the product level too. Quantify Security, Portability, scalability, etc.
It does wonders; check out MyJackfruit if that sounds like good ideas.