It may not be a bad move.
Firstly, when you pledge doesn't mean you have to come up with
the money, it's just a pledge until when they really need the
money, then it's up to Singapore to fulfil the pledge.
Secondly, when you pledge to help others, there is a good chance
when you need help, others will return the kind gesture.
Thirdly, it's PAP style. Stylo milo lah! They first take care of
the foreigners overseas first, followed by foreigners in Singapore,
then we talk about the poor Singaporean families here.