Unclear. You might be right, but I think it's possible that you're also wrong.

It's possible to stumble upon a solution to something without fully understanding the problem. I think this happens fairly often, really, in a lot of different problem domains.

I'm not sure we need to fully understand human consciousness in order to build an AGI, assuming it's possible to do so. But I do think we need to define what "general intelligence" is, and having a better understanding of what in our brains makes us generally intelligent will certainly help us move forward.