I guess you're not as jaded as me when it comes to our Safetycrats, Michael...
But yep, it probably will reduce motorcycle crashes, especially if these extra impediments to getting a motorcycle licence results in less learners..
It's certainly an easy way to reduce the death toll long term...Less bikes on the road, less accidents... 
Taking a look at Vicroads, can you tell me anything they do or have done to encourage the use of motorcycles?
We pay pretty much the same for rego as we do for the family car so that's not encouraging them.
Vicroads are obsessed with their mighty wire rope barriers...in spite of objections by motorcyclists so that's not encouraging more motorcyclists either.
They tried with all their might to design a working front number plate, this in spite of there being only one other country in the world that requires them on motorcycles. If they'd succeeded our choice of motorcycles would have been very much reduced as manufacturers would not bother to totally redesign the front of their motorcycles with us being such a small part of their market and not being required elsewhere.
And of course then there was the admission that came out of the "Inquiry into Motorcycle Safety in Victoria" way back in 1993...
"VicRoads has a stated policy of not implementing any programs that could be construed as encouraging motorcycling"
This has "supposedly changed now but I suspect they are just being a bit more careful about who they admit things to... 
So yeah, nothing would surprise me when it came to our Safetycrats... 
Having commenced working in road safety and traffic management in mid-76 at RoSTA (Road Safety and Traffic Authority) and progressing through RTA, VicRoads and now in a similar role at Local Government, I feel I can comment from an informed position.
Let's go back to 1969 when the VIC State Government
Declared War on 1034, for those of you too young or interstate and know not that means, it was an era when VIC had 1,034, yes
1,034 fatailities in that year.
The State Government responded with injecting $M's into road safety (research, programs, infrastructure) and transitioned the Traffic Commission to RoSTA. The start was shakey with 1,061 fatalities in 1970, but quickly got on track as the number of fatalities start dropping, pretty steadily but some slight set backs.
Year Fatalities1969 1034
1970 1061
1971 923
1972 915
1973 935
1974 806
1975 910
1976 938
1977 954
1978 869
1979 846
1980 657
1981 766
1982 709
1983 664
1984 657
1985 683
1986 668
1987 705
1988 701
1989 776
1990 548
1991 503
1992 396
1993 436
1994 378
1995 418
1996 418
1997 377
1998 390
1999 384
2000 407
2001 444
2002 397
2003 330
2004 343
2005 346
2006 337
2007 332
2008 303
2009 290
2010 287
2011 287
2012 282
2013 243
2014 248
2015 252
2016 290
2017 259
2018 213
2019 266
Pretty impressive, aye!
These results didn't follow one single initiative, it's just the cumulative result of the three "E's" - Engineering, Education and Enforcement.
Engineering - better roads and roadsides (clearing of hazards), roadside hazard protection (guard rail, wire rope barriers), intersections (traffic signals / roundabouts), vehicles (seat belts, helmets, ABS, airbags, crumple zones, 5 star ratings, etc...).
Education - driver / rider trainer (I'll let Sue comment on the former; I've previously commented on the latter), 0.05 BAC, 0.00 BAC, sealt belt and helmet wearing, etc ...
Enforcement - speed and red light cameras, BAC enforcement .....
Medical advances, (surgeons' skills, doctors, nurse, ambos and first resonders) fit in here, somewhere.
Crikey, how many have I missed? (It is 11:00pm).
If you take into account that VIC's popluation has (approximately) doubled over 50 years, without any of the intervention, a reasonable forecast of fatalities for 2019 would be in the order of 2,100. Another way of looking at could be, some additional 40,000 to 50,000 fatalities may have occured, if not for intervention.
And where did the intervention come from? Not from teachers, bankers, builders, shop keepers, factory workers (all good, honorable and worthy people). Probably as a result of the
Safetycrats research, investigation, trial (and error) making informed decisions on road safety.
Rather than being jaded and banging your head against a wall when you think of
Safetycrats, you could probably just say
thank you.
Safetycrat? Proud to be one of 'em.