I don't think so. Economics is not a zero-sum game. In any economic structure, there must a be certain percentage of low-end jobs which needs to be filled. The majority of low-end jobs are taken by foreigners, so that frees up better jobs for Singaporeans. There are Singaporeans who will be hard-hit by the competition, but they have negative income tax (workfare) and cheap public housing.
The figures speak for themselves. Unemployment rates are low and real incomes have seen sustained growth, even among the bottom 10% of households. This is very rare among developed countries which have seen stagnant or declining real incomes even at the middle class.
I have written in greater detail in this forum before. If you have time:
https://defence.pk/pdf/threads/they...r-some-foreigners.542682/page-4#post-10243363