If it’s not true, it’s a potato (so long as I define ‘potato’ as “that which is not true”). You’re just attributing arbitrary definitions to words.
This is not only true of humans, but the animal kingdom in general. But most animals don’t “deceive” - deception implies thought, understanding, interpretation - something only humans possess (and if a small handful of other animals also possess it, it wouldn’t be nearly to the same extent). So no, deception is not necessary for some to strip wealth and property from other. This tendency for forced inequality is so entrenched in our species that most of the time it goes on unconsciously. Thought typically comes into play, not to make us aware of this tendency, but to help us deny it, to help us make up excuses and justifications for it, the aim of which is to make us feel OK with doing it. Typcially, it is both the oppressor and the oppressed who buy into it.
You will find that the range varies among those in power and high status as much as it does among those who are suppressed and low status. In both groups, you will find as many people who are completely ignorant of this reality as you will find people who are fully aware of it - and everything in between.
Still, I don’t see the relevance of this to the distinction between money as a motivator and money as a justification.
I think we mean ‘motivation’ in different ways. I’m thinking chiefly about the immediate impulse or emotional drive that pushes us to do what we do. When I drag my ass out of bed in the morning to go to work, money never enters my mind for a second; rather, thoughts about what I ‘ought’ to do, or fear of being reprimanded for coming in late, come to mind. And when I’m at my job, working diligently on a project, trying to meet deadlines and solve problems, money is again the last thing on my mind; rather, I’m motivated by the desire to accomplish something, to please my bosses, to create.
When I say that money is the justification for what I do, I mean it is the element in the arrangement between my boss and I that makes it fair, makes it OK, that I should do work for him. It’s the green light to go ahead and do such work.
I understand where you’re coming from though; I understand that we seek out jobs to begin with because we need money in order to live. But again, this plays the roll of justification. We reason out in our heads, not only why we’re looking for work, but that we need to in order to survive. It is the justification underlying this reasoning. What’s actually motivating me during these times of job searching is a feeling of obligation, that this is just something one does when one is unemployed. There is also the motivation to be rational, to predict that if I don’t find a job or a source of income then one day I will starve, or lose shelter, and other essentials, and if that ever happens, only then will hunger, a loss of shelter, and other essentials become my prime motivation to look for work and money. Only then will they motivate because only then will they actually come in as these immediate impulses and emotional drives pushing me to find work and money. Until then, however, other kinds of impulse and emotions must fill in to motivate me such as feelings of obligation, of not wanting to be called a dead-beat bum, of wanting to be rational, etc.