Is ‘guns don’t kill people people kill people’ a good argument?
The stronger argument being concealed by the strawman is “people with guns kill more people than do people without guns.”
.. The only way we can claim that people cause other people to die without granting that guns cause other people to die is by rejecting transitivity of causation: that “A causes B” and “B causes C” does not imply “A causes C.” Certainly there are some philosophers (especially within the free will debate, e.g. Carolina Sartorio) who reject transitivity, but definitely not within this context.