Why aussies target every bowler whom they can't face?

This is Aussies's age old tactics like LTTE calling for ceasefire whenever they are cornered. When they are unable to play any player, they used to call him as a chucker. The list includes, but not exhausive, the greats like Ramakant Desai(dimunitive fast bowler from India), Murali, Harbhajan, Mendis, now Botha and next may be Merv. They use this as a ploy to understand their bowling secrets through Western Australia's Bio-Mechanics Dept. and preppare themselves. The typical cone culture of a penal colony.