There are people who work out of a need and there are people who work because they want to stay active and escape from the boredom of staying at home.
We don’t need to deny the second category of people in order to acknowledge and help the first.
We should not take away the right of the elderly to work to stay active if they are still fit to work – even if it is cleaning work.
What we need to do is to RESPECT them for the work that they do. You can do that by acknowledging their existence, thank them for the work they do. If not for them, you would not have a clean place to enjoy your food.