I'm pretty sure they'll expect a tiny bit of QA over an FPGA before fabbing them. I don't think they care much about what comes out of it though, whether it's

I'm pretty sure they'll expect a tiny bit of QA over an FPGA before fabbing them. I don't think they care much about what comes out of it though, whether it's "bugged open-source designs" or not, for sure they want less of the bugged one, but the end-goal isn't the projects, it's the people behind theses projects. Google wants more people that design chips, and then recruit them. This just goes on recruitment cost. They may be interested in the open source part of it, but as soon as they'll stop paying for it (and I'm pretty sure it's not going to stay for long, they mention up to 2021), the state of open source chip design will come back to the current status.