That's not nuance, that's binary thinking.
That way of thinking is sometimes very MN-style. Poverty and wealth get treated entirely the only two position when inface it is a spectrum responsibility and individual agency are often downplayed. Of course luck, upbringing, health and opportunity matter. Some people absolutely do start life from a much harder position than others. But there also has to be an expectation that people try to make the best of what they have and take some responsibility for their choices and or social responsibility where they can.
What frustrates me, and I am sure many others, is that when someone shares their own experience of working through hardship, instability or adversity, it often gets dismissed as simply “luck”, as though hard work, determination, discipline and sacrifice played little role at all. The reality is usually somewhere in the middle. Neither “I made it why can't others?” nor “people have almost no control over their outcomes ”fully reflects real life.
This is nuance.