I'm not sure the Waltons are a great example to be honest. They pay many of their employees so poorly that they're in receipt of state benefits. Society is effectively paying a portion of Walmart's labour cost. Until that's no longer the case I don't think the Waltons deserve a penny.
To address some of your other points:
A poor person in my country is allowed to take time off for illness without fear of being fired. That time isn't subtracted from their legally mandated minimum number of holiday days.
A poor person in the US will show up to work sick because they know their boss can let them go. Their colleagues might then get sick.
While I'm not sure how common it is, I've seen US news articles lauding co-workers for donating sick days to a colleague with a life threatening illness. While they're obviously doing a good thing, the necessity of the act honestly comes across as barbaric.
To address some of your other points:
A poor person in my country is allowed to take time off for illness without fear of being fired. That time isn't subtracted from their legally mandated minimum number of holiday days.
A poor person in the US will show up to work sick because they know their boss can let them go. Their colleagues might then get sick.
While I'm not sure how common it is, I've seen US news articles lauding co-workers for donating sick days to a colleague with a life threatening illness. While they're obviously doing a good thing, the necessity of the act honestly comes across as barbaric.