Fast food always has been, and is today and entry level position to the job market.  Way more folks qualified to perform this than there are positions to fill.
This is why it pays so low.  I just find it hard to believe that someone wiping off tables or making change assumes they should be set for life.  This is a task anyone can do.  There is a whole world beyond fast food.  Of course, it takes a little effort...
And worse, those who swallow this SEIU BS will soon be out of work, watching an inexpensive computer do their task.  Just being truthful.