Why shouldn't we? The fact that you can laugh at them and think that you are better is a already a credit to the gahment who had the foresight and long term view that had we not introduced the bilingual education policy, more Sporeans may speak not so good mandarin. Imagine the many Ah Bengs and Ah Lians will speak even worse English and Mandarin.
These elderly gentlemen were not the products of the PAP gahment policy - they were under the British policy, I think, the Senior Cambridge and Higher Senior Cambridge era.
So give yourself a pat on the back and thank Dr Goh Keng Swee aka PAP for introducing the Bilingual policy.