Ramping up by building superfluous transit infrastructure in the meantime wastes far more of 'your' money (and unless you're a billionaire, you as an individual are contributing effectively nothing to it). Remove the section going into York Region and the province would never have funded the section to York U at all. Ridership is very, very malleable and manufactured, anyway...buses can be rerouted, fares can be adjusted, parking lots can be built, trip-generating destinations can be consciously located there, etc.