I think this is because those Million-Dollar-Scholar-Ministir had been groomed to expect 100% obedient citizens that will not question their mindless stupidity.
Just think, do these implementers also buy soft drinks from mamak shops, vending machines and recycle themselves?? The answer is NO.
This is just another stupig idea to fulfill certain KPI to justify bonus, whether it work or not, people like it or not, doesn't matter. Just like the tray return shenanigans - again, do the ministers, MoS eat at hawker centres?? - they probably know nothing about the crows and mynas eating leftovers too when they implement that idea.