Sometimes a country could be good economically and does everything right but with even 1 flawed policy the government could be voted out(take Japan and Sweden as example).
I think the flaws that population white paper brings surpasses all the good things PAP has done as a government. We've seen cracks and flaws of population white paper, which is selective hirings by foreigners, foreigners monopolizing the good jobs, locals being bullied by foreigners at work, foreigners getting bold and interfering with locals politics, foreigners having no respect for the locals and beating up locals.
Yes economically we are good and this is indeed a safe and well runned country but with all the problems population white paper has bring, do you think such problems would worsen when foreigners/new citizens population grows in the future?
I think it is better to vote in a new government because the flaws in population white paper is too detrimental to ignore.