"Many restaurant owners illegally don't actually follow this law". "Report them to the DOL". "I don't want to do that. You should tip me to make sure I have a livable wage instead."
Don't confuse "logical" with "correct" or even make the false notion that there is a "correct" reaction. The "right" reaction depends on your goals, short term and long term.
But defeatist attitude results in a tragedy of the commons situation. It's social debt. Think of it like a mess. Messes are easiest to clean up right after they occur. But as time goes on, it becomes harder to clean. If everyone is doing their share of their work messes are very manageable. But if people don't do their share, then it must be picked up by everyone else, right? I think most of us have been in a situation where we've had to clean up "everybody's" mess (if you haven't, you might be that asshole leaving that mess). The defeatist attitude is like that person grumbling "it's too big of a mess, we'll never clean it up." Well... not with that attitude. If the mess needs to be cleaned up, it needs to be cleaned up. Either you help or you make it worse for everyone else.
To be clear:
We always need to make sure we distinguish a conversation about wage theft and a conversation about tipping. I think they are unknowingly being used interchangeably (or as an assumption in a conversation)[0] https://news.ycombinator.com/item?id=44751537 (sources linked here)
[1] Federal only lets max credit of 70% of min wage. Some states go up to ~75% of min wage, but their minimum wage is higher than federal.