It’s super hard to know this and there won’t be a consistent answer because everyone is different. You have to meet people where they are.
I think you did answer your own question on this one. I’ll also say that as a somewhat technical user but still not a heavily technical user like some people here, GitHub is a really baffling website. It’s hard to even figure out how to download something from it. I would strongly encourage anyone who wants to reach non-technical users to avoid GitHub. It’s made for programmers and it doesn’t make sense to anyone else without training.