Well, there's the chance that it could harm an innocent, or a fireman/ paramedic if you booby trap a house/business and they have to enter.
That said, with that guys vehicle being broken into that many times, and the fact that it WAS a thief who tripped the trap, I would use jury nullification/ not guilty were he charged if you put me on that jury.
Welcome aboard. How long has it been since the oil was changed?
The Hondamatics run on oil pressure, so you need the proper amount of JASO MA rated oil in the engine, and I'd run full synthetic (I use Rotella T6) and keep it fresh.
Could also be a bit of trash in the carb, or a dirty air filter.