They aren't throwing large ADV/couches into vans!To be honest. Between cloning a fob and just picking up your bike and throwing it in the back of a van, both are about the same investment of time. A motorcycle will be stolen by just moving it. A car, cloning fobs is a real concern for theft cause two big guys aren't gonna be able to pick it up and walk off with it.
I would look at a keyfob for a motorcycle as a convenience and not as a deterrent. Easier when walking away, easier when walking up.