Ok. This has just transformed into a phobia. Being a diamond bachelor isnt all that bad after all haha
Malaysian people are very closely knitted with their family. Very unlike local Singaporean girls who has to fend for themselves and so most are more outspoken. With many relatives as their backup. Anything not happy, your Malaysian wife doesn't have to open her mouth. Her Ah Mah will call you up or talk to your mother directly. Even unreasonable requirements. If not happy, whole family will turn up at your house. Or your parents. And live here at your expense. Your wife will insist that you keep a room just in case they visit.
Sometimes its makes sense for the wife to be more vocal. Then you have some room for compromises. For the elder who thinks that they need to side their girl from your bully, a lot of things you don't have a chance to argue with. You can only bite the bullets when it come, esle it turns into bigger problems.
I know it because I got many relatives and friends who marry Malaysian wives. You marry them thinking they are the quiet, hardworking and obedient type. End up worst then marrying a Singaporean girl. But what to do? Too late already.
