optimism vs pessimism.
until proven otherwise i assume a public transit agency with hundreds of architects, engineers and experts who really do try their best to find the most cost effective, efficient best designs possible.
im really curious as to the intentions you think metrolinx has? that theese PEOPLE want to destroy trees?
Organizations regularly develop "blinders" and internal culture that causes them to behave disfunctionally or stray from public interest. That's just the nature of organizations. Politicising organizations' missions makes that even more likely. There are glaringly tragic examples - Three Mile Island, the Challenger crash, Walkerton, Lac Megantic - but there are many more less significant missteps that happen because organizations are in a hurry or believe that one mission outweighs all others (contrary to what is possible or optimal).
Having effective challenge and oversight processes that require organizations to show their sums to the public and defend their decisions is vital to protecting the public interest. Professionals in organizations eg Design Engineers understand those challenges are part of their job and they will have to "run the gauntlet" with their products. A wise man once said - we trust, but we verify.
It's very apparent that ML tries to sidestep all that.
As I tried to show above, this wasn't a small cabal of naive or misguided people deciding that their views outweighed the public good of a subway, or that the subway should be stopped. It was a case of the significant majority of Toronto City Council expressing grave reservations about ML's handling of the Ontario Line, and being ignored by ML and overriden by the Province. That supposed cabal may have just been a group of motley volunteers who jumped into an unwinnable argument, but sometimes it's about mounting the opposition even when you are outgunned. And maybe those "volunteers" had their own stature in the discussion, and plenty of backing in the City food chain.
While I find parliamentary processes childish and absurd at times, the existence of a loyal opposition (in parliament) and the right to mount challenges (in courts and tribunals - an adversarial system at heart) is what protects us from missteps from government. It may be ugly to watch, but it is all we have.