Sillypore is a unique place.
Foreigners can stay here for more than 30 years holding blue ICs without changing to citizenship. Their sons can be educated here from kindergarten to university without serving NS. They have a 2-year headstart in the job market and their position further enhanced because their work need not be disrupted by reservist training. Employers love to employ this kind of people.
It is quite different from other countries, Australia for example, where a PR is given up to 5 years to convert to citizen. Otherwise the PR status will expired. It is understandable that some people may change their mind during the trial period and go back to their home countries. (Just like the China girl in Sinkiepore.)
In Sillypore, PRs can be totally comfortable, reaping the economic benefits and staying here for a long time without committing. They are in every sense of the word just "permanent" residents.
Netizens, as usual, are wrong with their cowboy stance and untargeted approach. It also gives plenty of ammunition for running-dogs to defend the situation, saying the China girl was just holding a blue IC. What netizens should do is to lobby the MIW to impose a 5-year PR limit like other countries.
In passing, I would like to say something about the abuse of the term "sinicization". There is little or no sinicization of Sinkiepore. The local Chinese are just as Sinkie as before. It is the huge presence of mainland Chinese that gives the impression of sinicization. That portion can be erased overnight through a policy change. One very small scale example is the cleaning up of Geylang.