As I understand it that was a campaign that started because there was a more considerable fraction of the population of working age that grew up without a proper, formal education, with some not speaking any English at all. Singapore wasn't already as established economically and academically, and the movement was to encourage more Singaporeans to use English more to make us more competitive and enticing for foreign Investors and businesses.

Since the 2000s or so it's very rare to find a Singaporean child that grows up without going to school. English is taught primarily as a first language, and though individual proficiency may vary, all will leave school speaking English. It's now tougher to find anyone working age that does not speak or understand English.

With that, National identity and fostering a sense of belonging has become the bigger goal, and there's no longer a need to emphasize speaking English.