Rated De, this is an excerpt from your provided link: (my bold)
QANTASLINK says its pilot shortage is so bad, its lobbying the government to change visa laws to allow foreign pilots to stay in the country for longer than the current two years
The airline is seeking permission from the federal government to address an acute pilot shortage by temporarily bringing in a limited number of simulator instructors and experienced pilots from overseas.
The agreement would enable pilots to be admitted for a period beyond the existing two-year window permitted under the current skilled visa program. QantasLink says attempts to encourage experienced aviators to move to Australia for contracts shorter than five years have proven uncompetitive
So the current provisions of the Temporary Skills Shortage visa are not suitable to recruit pilots largely because of the 2 year limit and the lack of a pathway to permanent residency. Qantas are seeking a Labour Agreement covering QLink and Network which do not have those restrictions, they have applied but it has not been granted.