What u said, every GE has been said before, not only this one, so clearly this is not a factor that will make people swing to vote for opposition.
What swings people to vote for opposition is the neglect of MP duties and politician's mistake. An example is SK, the PAP MPs didn't fight hard enough for SK residents and u could see how Lam Pin Min was so much hated in SK that time. And WP only won narrowly.
However, Punggol is different. Punggol was and still is rising star of Singapore estate. Punggol has so many amenities and infrastructure. New station opened, Punggol East is going to have a cross island line and Punggol MRT will be interchange. There are good PAP MPs there and with Harpreet's misinterpretation of Punggol in his speech, I am leaning towards a PAP win in Punggol and a shift back to PAP in SK.