You are misreading it. “Greater Police Presence [..] only ever prevents crimes [..]” - Kia/Hyundai take, claiming that increased police presence leads to highe

You are misreading it. “Greater Police Presence [..] only ever prevents crimes [..]” - Kia/Hyundai take, claiming that increased police presence leads to higher rates of crime prevention. “Police do not prevent crime” - police, in its current state, is not that effective at preventing crime (as opposed to a situation where police presence was increased). I don’t have a strong opinion on this at all, and for all i know Kia/Hyundai take might be incorrect. But there is no inconsistency in what they are claiming. TLDR: first statement - their cause-and-effect claim, second statement - “the current police crime prevention rates are bad [which is why police presence should be increased according to our earlier claim about increased police presence increasing crime prevention rates]”.