Propane BBQS are out in the open and any unturned propane is rapidly dissipated. In the oven it just builds up and as mentioned by Dave, could become a bomb.
Maybe it would be prudent to simply open the oven door whenever lighting the pilot, just like you would do if lighting it manually with a flame. Also, my experience with the oven has been that you have to push and hold the oven control knob IN for about 30 seconds or more before getting a good flammable gas flow at the pilot orifice enabling the pilot to light. That holding the knob in gets LONG real soon, and the possibility of filling the entire oven with propane gas from the small pilot orifice by holding the knob so long in seems remote. The big flow of gas for the main burner won't happen until the pilot light has heated the thermocouple for about 30 seconds, so there is no big gas flow until the pilot light is lit. In lighting a propane BBQ, there is no small pilot light gas flow, just the big main burner gas flow, so ignition flameups are MUCH more possible.
BTW, our propane water heaters already safely ignite with electronic spark ignitors, albeit with electronic logic boards to limit the amount of time and amount of retries before the system faults out. The same goes for the propane refrigerators, too.
