Overall, comments to Grand Chief Phillip's article do not reflect the views of Canadians, judging from my sample of the 50 consecutive responses below:  74% were opposed, 16% were neutral comments, and 10% supported the Chief's position.
The only national poll I could find of Canadian's views on pipelines was the EKOS poll of late Feb 2016.  It found that while 56% disagreed with the following statement, 40% agreed with "No new oil and gas pipelines should be built in Canada, even if this hurts the economy."  So instead of 40% of the comments below opposing Kinder Morgan, 10% do so.  
And in the EKOS poll, when asked specifically about the Trans Mountain Pipeline, 47% of Canadians supported it and 42% were opposed.
So, the comments below appear to represent a very biased sample of Canadian opinion, four times less likely to oppose the Trans Mountain project than was found way back in February, 2016.