The shopping malls in singapore are like its HDB estates-they all look the same and have the same owners/tenants.
If you go to these HDB estates mall, you will find the shoppers are mostly locals (with low purchasing power) while the foreign talents Pinoy, Indian Ft's and PRC's prefer Orchard, Little India or Chinatown areas.
The most popular shop in the heartland malls would be Daiso -selling things at $2 and you find these supposedly world/1st class locals buying all the cheap stuff there while wondering when they will lose their jobs to foreigners.
Anyway most locals are not Christians and so why should they bother about X'mas?
The last part...Christians don't go to the malls just because it is Christmas.... The shopping malls here have the same mix of tenants, you go into one, you have been to one.
The planner have over built heartland shopping malls, for example, in Sengkang/Punggol/Hougang, within a 3km radius, go count, how many small, medium & large shopping malls?. Go survey, the tenants & the owners of the malls, plus the food court operators..the same, Kopitiam/Foodfare/Kofu etc.. the same type of food stalls...the shops Cotton On/Subways/Starbucks/Macdonalds/KFC/... Harvey Norman/Challenger/Courts..etc etc etc..
In addition to Daiso, you have Japan Homes, found almost in most malls & new one, I forgot the name...not to forget, Uniqlo too..