Hello Niki,
I ignore why all those communications are used with the MC13233. It is true only one peripheral (UART or IIC) would be necessary to communicate with it, but the final application might use the other ones for any specific purpose.
In other words, only the UART or IIC, along with the radio-specific signals, would be enough to control and manage wireless transmissions through the MC13233. Nevertheless, it is up to the final application to use as many interfaces as needed. I guess the design you are referring to does more than simply transmitting data over the air. You should double check with the developers. Or simply ignore the rest of connections if you will not use them.
We do not have specific demos for Kinetis K10 and MC13233 at all. However, you could use any f the MC13233 examples included in BeeKit such as SMAC Wireless UART to interface them. With such application running in MC13233, any data received via UART 8either form a PC or another MCU) will be sent over the air and vice versa.
Regards,
AngelC