It seems like when it works, it really works for people but then some people have the adverse reaction.
I understand how you feel confused. It is hard to know if the drug is causing a problem or if it is the illness....
I would keep a chart on your agitation, even if it's what you shared here so it's documented for your prescriber. Sometimes the prescribers don't really want to believe it's the med and they deem us as being difficult if we say it's the med. Perhaps Sometimes Psychotic is right.....a higher dose might work better.. I don't know. I was on a super low dose.... and the side effects were intolerable for me, even after being on it awhile.
I knew it was the Abilify and not my illness that caused the agitation. Like you I would be doing a soothing healthy thing like you described mushroom gathering..and suddenly I'd be overwhelmed absolutely with a physical need to yell or race around the block or smash stuff. After stopping the Abilify, that feeling of being compelled went away. Of course I have a normal amount of irritability and agitation at times but not what they would say is "inappropriate"
I hope it gets better for you...

does your prescriber know what you have experienced since being on it?