Well, thats true, in a way. Lets take a look at what we have:
- Rocks- used to blow up mines and other explosive devices
- Grenades- used to get rid of Sligs or other enemies in certain situations
- Farts- exploration, or getting rid of enemies
- Levers & Rings- for opening doors, etc. Not really a weapon, but they do things that kill enemies in times of need
- Possession- Abe possesses certain things which could be considered weapons, but for intensive purposes only
And theres probably a few other things on MO that I dont know about yet, so someone else can outline them.
So, in retrospect, I consider things that Abe uses as tools or aides, not really weapons.
