Just seems to be test after test for 17 year olds. The 2 year wait was a good idea but this seems excessive.
And why can a 17/18 year old in a car (insurance permitting) jump straight into a Ferrari?
Bikes are way more dangerous than cars, which could be why. Motorcyclists make up 1% of road users, and account for 40% of all road fatalities, so perhaps the rigorous testing and slowly going up power brackets ia a good thing