Atleast around where I live, this is not the case. Fast food joints often commit wage theft, and minimum wage isn’t near $20+. The highest is just under 17 with most being under 15.
Again, people also tend not to get paid for opening/closing over time certain types of work. Also, sometimes their paycheck is just lower than agreed. It’s common
We get news anchors, papers, journalists, and social media figures fear mongering about sky high minimum wages which convinces people progress is being made quick. It is not. You are not immune to propaganda so I understand why you’d think this but, broadly, this is not the case