Yes, they might not get the most nutritious or balanced diet but they get the calories they need, oftentimes too many.
This is exactly the kind of moving target the parent is complaining about. Pretty much everyone is fed. But people then move the goalposts and pretend the progress didn't happen because they're not fed nutritiously enough or it requires too much work, etc, etc. I'm not denying that there's more work to do but it's folly to pretend that western nations have not more or less solved hunger compared to the situation even 50yr ago.
You can see this in the statistics for average height, which shot up all through the 1800s. Other countries did not really catch up until after WW2, and then only when they turned to capitalist agriculture.