Effort is irrelevant. If it takes me ten years to grow one apple, should I get paid the same as someone who can produce 1M apples? Productivity is what matters, not effort.
People are more productive when they have tractors and seed and fertilizer and all the other requisite capital inputs for growing apples. In fact, one can hardly think of anything productive one can do with zero capital inputs.
You do not live on an island. There is trillions of dollars worth of both capital and labor at work underneath your every waking moment that supports your life. Your level of effort means nothing to anybody.
That's half my point. Because what you said might be true, and yet, the argument by Capital is often that they are working HARDER THAN EVERYONE else to get their wealth and everyone else is lazy. Which is a) both irrelevant as you state, and b) a sign they need the validation that they are putting in effort / more effort to justify what they are extracting from everyone else.