We hear this all the time, but it seems largely irrelevant. There's no good reason to believe that the lowest-paid workers would lose their jobs if they had to be paid more. There are no randomized controlled trials about raising the minimum wage, but quite a few natural experiments suggest a minimal effect on unemployment with reasonable increases. Low-paid workers have won raises with collective bargaining while your theory suggests they would be laid off en masse.
There is no consensus amongst economists that raising the minimum wage as high as $15/hour would substantially increase unemployment. You are, of course, welcome to disagree with them, but you can't claim this is just Econ 101.
it might be hard to accept for the people that used to work there. right now, the labor market is pretty tight at the low end, so these hypothetical workers would likely not have much trouble getting a different minimum wage job. but it's not always like that. I remember it being surprisingly difficult to get my first minimum wage job as a teenage.
