I'm not quite sure what's the issue with this poster. It seems to me what it's trying to say is 80% of sinkies want to retire with the same lifestyle as what they enjoy during their employment days and CPF is telling everyone that in order to do this, regular additional top ups spanning their employment years is required.
That is mathematically correct as the gratuity payments from CPF Life will not be enough for sinkies to continue their lifestyle if they solely rely on mandatory contributions and meeting minimum retirement sum.
It seems to me Kok Ming Chiang and the so called 40s gentleman just want to rant against CPF without even bothering to understand what the poster is trying to say.