you know the easiest way to dot hat is to have them create similar projects — so you can compare their engineering capabilities which are the base for delivering business value.
When you talk to a candidate who you made to invested hours and days into a demo to prove something that he prove everyday by working: how do you prove to them that you can deliver on your promises? Why dont you prove that you a product guy who can translate vision into technical requirements?
Your hiring is based on excitement and likabilty — not strategy and professionalism.
https://vikingosegundo.gitlab.io/posts/looking-for-devs-interviewing-for-mind-readers/