These complainers need to get some training and move on to a better paying job if they need the money.
In the meantime raising the wages would make the food McDonald's serves more expensive which would impact all the low income people who rely on McDonald's. I can't think of any other chain that offers a "dollar menu" where someone can get a pretty filling meal for less than $3. That's a valuable service. That would be a thing of the past if these complainers get their way.