> mechanical engineering group trying to design the best extremely thin keyboard they could, but getting bitten hard by a mismatch between reliability in a prototype

And this is why I believe more in the Ivy story than this one.

If you're a mechanical engineering group mismatch between prototype and production is MechEng 201 pretty much.

You wanna put out a new keyboard fine, but test the heck out of it. Let people have a go at it, put force onto it, spread some food on it, etc

Unless that mechanical group really think keyboards are a toy and don't need reliability, in this case they don't belong there