Agree! but you don't always use your father still work at 90. If he is manual worker and getting $1,000/mth then the comparison is appropriate.
Singapore is an equal opportunity society. Anyone can become successful if they set their minds to it.
However, no government can guarantee equal outcomes. Some people are superior to others. It's just a fact of life. You can't blame the PAP for that. It's the way nature shuffles the cards.