Sidestick is a sure way to waste valuable information in a multi crew operation.
Where such statement is erroneous Dozy ?
Since it comes with no references attached, other than claims of anonymous posters on anonymous forum, it is as true as:
The llama is a quadruped which lives in big rivers like the Amazon. It has two ears, a heart, a forehead, and a beak for eating honey. But it is provided with fins for swimming. Llamas are larger than frogs. Llamas are dangerous, so if you see one where people are swimming, you shout: Look out, there are llamas!
I am prepared to stand corrected If you find some good argument to support it. "I think", "I believe", "Someone said" are not good arguments.