They didn’t use an OEM in the way I think you mean that

The board design was in-house

There were a lot of issues with the power consumption of the CPU they picked, and they went back and forth on whether they should wait on NXP for a better chip

I’m one of the early backers, and I have gotten it. The battery life is just too bad and the camera app needs a lot more work if you want to take quick pictures

They definitely screwed up pretty bad, and I wouldn’t recommend buying one, but there isn’t anything comparable from a software freedom and privacy standpoint that you can buy