This is only true if you define "work" as "tasks that has to be executed to survive". If you live in the wilderness you have to "work" a lot because you have to execute many tasks to survive. That is not what work is. I have to eat and defecate to survive, but you wouldn't call that "work", would you?

The definition of "work" used by every leftist movement in the world is different. They define it as "directly or indirectly selling your time to other humans in exchange for material benefits." Thus, if I hunt alone in the wilderness to get meat for myself I'm not "working". But if there is another person in the wilderness who forces me to hunt to get meat for us then I'm "working".

I hope you understand the difference. Scrubbing toilets is not per se "work". Scrubbing toilets so that someone will give you money to buy food is "work".