SLIMETrout Disagree. I feel almost invincible with those things. I rarely hit myself, especially not at a rate that is commensurate with the number of knockouts I get with them. They hit anything that's not directly behind you. There's no recovery time needed between hits either.
I almost shut an opposing team out of Lollipop Factory the other day because I was chuckin' all over their lever. I don't even think they need to be nerfed to an extreme, but rather, just mildly increase the rate of self-injury.