LKY is a human being and all human beings make mistakes. Curse him if you like but for others, there is a time for reflection on what he did for SG to get rid of the slums, gangsterism, poverty, etc.
If LKY had not surfaced in 1950s, would the sinkies have an independent and modern SG today?
Had LKY not fought the British to get independence for SG, what would have been the fate of SG? Would the British offer SG to the Tuanku to makan? If Tuanku had makan SG like he makan Sabah and Sarawak happily, SG today might have been a part of boleh land.
Think of history and judge him accordingly. As for his successors, it is a different story. Flame them, curse them, up or under the lorry for them, etc if you like.