I felt he was quite clear he meant ending first past the post and that's it. Which if course he cancelled because the panel was suggesting a new system other than the one he wanted.

He said it wasn't needed because evil Harper wasn't in control anymore. Yes, really:

Under Mr. Harper, there were so many people who were unhappy with the government and his approach that people said, ‘We need electoral reform in order to stop having governments we don’t like'. However, under the current system, they now have a government with which they are more satisfied. And the thirst to change the electoral system is less striking.