How does that work when no Silicon runs at 60ghz? What can process the signal?
60GHz here is talking about signal, you only need to create an oscillation at 60GHz not do fp multiply. There are various ways of doing so, but consider that it only takes three inverters to create a ring oscillator. As for the data - you don't need to fill the buffer at the speed which bits are sent, which is how you can interface with a lower frequency microcontroller, i.e the buffer is filled at a lower frequency but in large chunks i.e words.
Someone with proper EE and signal processing knowledge will explain more accurately but that's the crude idea (components frequency vs clock).
Source: graduate with MS EECE in Comms, Control, and Signal Processing in a couple months
Ah, this is not what I meant but just as relevant. I think you are essentially saying that you don't have to send as many bits per second that the signal frequency is capable of? I suppose that would satisfy any arguments that focus on bit throughput.