Well I mean then you are a corrupt guard, willing to send other do your job for a pay you yourself provide.
If its from the guards as a whole then they suck in general. Imagine a cop paying a young adult to deal with a rabbit dog. That doesnt make sense does it ? Or paying someone to go into a dark alleyway as there are rumors of people disappearing ?
The guards-are-incompetent is the nicest paradox name. It could also be named guards-are-lazy-cowards or also guards-are-corrupted but this then changes the context of the quests, no ? Which is why being incompetent remains the best worst kind of guards IMO.