Be interested when they talk about things and ask questions. Engineers stereotypically have been told too many times that they need to dumb things down. And there’s a large percentage of neurodivergent people in software engineering who like to info-dump, but have been told their whole lives that they were boring or they overshare. But often when they are given the opportunity to share openly or even better, people show interest in learning, they usually will open up. It might take time, and it might take you getting a basic understanding of some technical topics so they don’t have to explain those basics to you to even start explaining their work.
I have worked as an analyst, product manager, project manager, engineer, and architect. So I tend to be really good at bringing business and technical people together by interjecting a few details that an engineer might skim over because it’s basic to them as well as interjecting business scenarios that a business person might consider obvious, but an engineer might get frustrates because it was never explained to them and they like to know “why”.
I don’t get the logic of cutting off contributions of any kind unless they were actively sabotaging the projector something. Seems like that just makes the fork basically a guarantee. And in open source, a fork that discourages community is always going to be at a disadvantage.