No more than two books allowed on board

I was told that a maximum of two story books could be carried on board for a toddler. The counter staff asked to see inside the handbag to check that there were no more than two books. Seriously, if this is company policy it should be changed. They also said that only 'a couple' of nappies could be carried on. The bag wth baby things for the flight weighed 3 kg (it was weighed by staff at check-in).

Domestic
Australia-Brisbane
Australia-Sydney