See there you go assuming. I've worked at Hardee's (fast food), and yes, I wanted to do a good job. I have no problem with incentives to do a good job. But when those incentives are expected regardless of the quality of job you do, THEN there's a problem. So, force restaurants to pay the actual minimum wage. Let patrons know that tips are not expected, but accepted. If someone does a good job in eyes of the customer, they're free to tip any amount they'd like. So there's still incentives to do a good job.
I believe a PP said if servers just got minimum wage there would be no reason for them to work there (or something like that). But there are people working minimum wage jobs everywhere. If an employer wants a better quality worker, they offer more, whether that's pay, benefits, perks, whatever. Just like every other industry.