I wasn't sure neither before I saw it for myself. The quality of the execution and materials are truly impressive (with real granit for a change). The concrete pergolas have plants on their roof that will eventually grow (they have just been planted), as intended when they were created back then. For now, the trees are all young so we'll have to wait for the square to be greener but it will. The fountains and water bassins are amazing and have great success with people.
They kept some of the brutalist design from the 70's, but with time and vegetation, it can work (see London's Barbican). I think we have to stop demolishing stuff created by artists and try instead to make it work as it was intended. Square Viger was abandoned, but now it will be a true gathering spot with the CHUM just across the street.
The true centerpiece of the square will be Mastodo, the giant dynamic water sculpture conceived by Daudelin. It is being restored and will be back in the fall.