Not true..... LTA SOP on handling taxi complaints states that it is not the taxi driver's duty to carry your luggage.... however he may offer to assist you with your luggage and he can only proceed with the assistance with your expressed permission.
If you lodge a complaint against the taxi driver because he refuse to carry your luggage.... LTA will tell you to go fly kite...... no offence committed.
But if you lodge a complaint against the taxi driver for carrying your luggage without your permission...... LTA will fine him $100 and kenna 6 demerit points.
The drivers are doing you a service by offering to carry your luggage...... they do not have to do it if they dun like your face.