Only in the sense that Paul Graham talks about successful startups "doing everything right
and winning the lottery." There is a certain amount of luck in anything, but being a statistical outlier for income isn't the same as "winning the lottery," which is basically random chance.
And the reason it matters is because earned income encourages people to develop useful skills that the world desires (so as to presumably make the world a better place). Telling people they can actually make bank at X if they keep applying themselves is telling people "You don't have to be a pie-in-the-sky idealist to make the world a better place. You can do things the world actually values, be really good at them and get paid excellent money, so: win/win!"
The Nobel Prize and even MacArthur grant are intended to reward people after the fact for making the world a better place. Part of the point is to empower them to keep doing what they believe in and not give up and go do something else for pay that would be less beneficial to the world at large.
It may help encourage some folks to keep at the thing they believe in despite the low pay, but it's not a plan you can take to your accountant for how you will make your retirement work: "I'll just be amazingly good and then get a random windfall. It's Fine!"
I'm a freelance writer. Like a lot of writers, I work for peanuts.
I don't expect to be the next JK Rowling, but I can learn from her (she rewrote the first chapter of the first book like twenty times) and I've applied myself and gotten better. My pay has been gradually going up.
Because of how publishing works, JK Rowling's financial success is somewhere between salary of a million annually and random grant out of the blue. Plenty of people think writers must be nuts because most writing pays so poorly. (I have been repeatedly told to "get a real job" if I don't like being poor.)
But there's still a difference between that and your "win the lottery" framing for this discussion. It's really not the same thing.