Oi!
I'd rather be on the dole, it'd give me time to do my stuff rather than be paid to wipe peoples arses in an industry they suck up to and I don't. And, I'm british, it's my right to moan about inane things!
But TBH, Mark and yourself are right in terms of the general public's preception. It seems that if you make lots of bodily movements during a set people assume you're actually doing something, otherwise they get suspicious.
In my personal experience; I've heard from the grapevine, punters questioning if I've truely played live during my sets (which I have of course, why else would I bring a ton of gear and spend quite a while setting it up before hand). I still can't help but feel it would have probably been wise to stick a couple of sponge hands to my shoulders and bounce left and right :/