Seriously, how delusional are Australians about the quality of spin currently lying around their country?
Has it really escaped their notice that between Benaud and Warne (that's nearly 40 years and, taking Warne's first hurrah as in New Zealand in 1992\93, and excluding matches during the Packer Schism, 227 Tests) Australia had one passable Test-class spinner, Ashley Mallett. Even he only had 24 good games, followed by 14 very poor ones.
Those tried included those noted fly-by-nights Rex Sellars (1 Test), David Sincock (3), Terry Jenner (9), Ken Eastwood (1), John Watkins (1, "the luckiest player ever to be picked for Australia"), Peter Sleep (1, then 10 more after a 4-year gap), Tom Hogan (7), Bob Holland (11), Murray Bennett (3), Peter Taylor (13) and Trevor Hohns (7). None did remotely well in their fleeting careers.
They also included John Gleeson (29), Kerry O'Keeffe (24), Ray Bright (25) and Tim May (24), who were poor to different degrees in their careers. Greg Matthews also played 33, doing even worse than those 4 but being a good enough batsman to hold down a place.
Bruce Yardley did better than some, enjoying a golden season in 1981\82 aged 34 but otherwise doing little (and playing just 19 Tests outside the Packer Schism in any case). Jim Higgs, who was almost certainly the best wristspinner between Benaud and Warne, got a raw deal, doing well enough in the 7 Tests he played outside the Packer Schism. His career was over at 30.
And if anyone really expects a Mallett or Higgs out of the likes of Cullen, Bailey, Hauritz and Casson, well, they're crazy. At the moment, none of those are even proven State players. Even the seeming comforts of having MacGill around for a few years aren't what they seem. MacGill has been a better spinner than most, but nonetheless his record looks far more impressive than it is. In 5 matches against Bangladesh and ICC World XI, neither credible Test sides, he has 42 wickets at 14.33. Knock out these and it’s 156 in 35 at 30.67. Still not the worst, but the truth is the only time he’s had consistent success was 2 games (MCG and SCG against England, a team noted for their virtually comic fallibility against wristspin) in 1998\99. Knock-out these 2 games, too, and it’s 137 in 33 at 33.11. Less impressive. Less impressive still, when you consider it’s actually 8 good games out of 33, and only twice managing success in successive matches. On isolated occasions (Rawalpindi 1998\99, Queen’s Park Oval 1999, ARG 1999-‘Gabba 2000\01-WACA 2000\01, Kensington Oval 2003, SCG 2004\05-Bellerive 2005\06) he’s played a big part in a victory. But mostly he’s been average or poor. And the portents are that his successors will be even worse.