I don't think the city transportation department looks at it from the point of view of people using the roads, although having taken buses and being a pedestrian, I will say I don't think they serve transit riders and pedestrians better either.
I assume not much or enough thought it put into how things will be disrupted and the cumulative impact of multiple closures. For instance the area around Jasper Ave and 97 St is a major obstacle right now. Of course 102 Ave is also closed too and 103 Ave in front of city hall has been closed for a long time. It can lead to some very long, confusing and not well marked detours to get to certain places in that area. I am glad I don't have to go there often and sadly for the businesses in the area, I generally try to avoid it.