This is the bit that you are missing: >>Some restaurants were forced to add a surcharge on guacamole, or temporarily to scrap it from their menus altogether. O

This is the bit that you are missing: >>Some restaurants were forced to add a surcharge on guacamole, or temporarily to scrap it from their menus altogether. Others swallowed the bill. They could raise prices but they have chosen not to so far. They may have to in the future. That explains why their financials were not great.