Yes, Singh is biased in his assessment of the situation and the NDP needs to take action with regard to its climate policies. However, lets take a look at the Liberal record on climate change that you are so proud of.
The Liberal 25 year history of promising to deal with global warming has been one long series of promises followed by actions that always fail to meet their greenhouse emissions reduction targets and often result in an increase in emissions.
“Canada has missed two separate emission reduction targets (the 1992 Rio target and the 2005 Kyoto target) and is likely to miss the 2020 Copenhagen target as well. In fact, emissions in 2020 are expected to be nearly 20 per cent above the target.” (https://www.cpacanada.ca/en/news/canada/2018-09-18-canada-failing-to-red...)
The Liberals were deeply involved in negotiating the 1997 Kyoto Accord agreeing that "Canada's Kyoto target was a 6% total reduction by 2012 compared to 1990 levels of 461 Megatonnes (Mt)". Instead the 1997 emissions of 671 Mt during the year of the signing of the Kyoto Accord had risen to 747 Mt in 2005, the last full year of a Liberal government before the Conservatives took over. This was 33% above the 1997 Liberal Kyoto target. (https://en.wikipedia.org/wiki/Canada_and_the_Kyoto_Protocol)
After running in the 2015 election campaign on a climate change platform, Trudeau adopted Harper's greenhouse emission targets, which many climate change scientists were far from enough. Unfortunately, he hasn't even come close to meeting those.
In March 2018 the auditor general concluded the Trudeau Liberal government "is likely to miss the 2020 Copenhagen target as well". (http://www.oag-bvg.gc.ca/internet/English/parl_otp_201803_e_42883.html)
In April 2019 Environment Commissioner Julie Gelfand concluded "Canada is not on track to hit its 2030 target,". These targets were the Conservative Harper government ones. (https://www.cbc.ca/news/politics/environment-commissioner-julie-gelfand-...)
The Liberals declared a climate emergency in June and then announced today the tripling of the Trans Mountain pipeline to carry bitumen to the coast bringing about a massive expansion of the fossil fuel production. Trudeau won the understatement of the year award today when he said "Not everyone will agree with this".
Environment and Climate Change Minister Catherine McKenna called climate change a “real and urgent crisis, driven by human activity,” requiring the government to make deep emissions reductions to meet its Paris commitments. The Liberals have failed previously failed to meet their greenhouse gas reduction goals of 1992, 1997, and 2005.
Eugene Kung, lawyer with West Coast Environmental Law, and lead on the First Nations case against the pipeline commented on Trudeau's announcement that profits from the pipeline would be used to promote green energy: "That’s like saying we need to keep selling cigarettes to have money to fight cancer". Former Liberal Environment minister David Anderson point out "There is no credible evidence to suggest that Asia is likely to be a reliable or a significant market for Alberta bitumen". (https://www.vice.com/en_ca/article/wjvkqq/canada-justin-trudeau-declares...)
By the way "there are no refineries in Asia that can currently handle Canadian bitumen, which needs to be processed first into synthetic crude." (https://globalnews.ca/news/5399442/5-things-to-know-about-trans-mountain/) So the line that we will be able to sell it for higher prices in Asia is a myth.
The Liberal solution: declare a national climate emergency and immediately announce more pipeline and fossil fuel production. The announcement of the Trudeau Liberal go-ahead on the Trans Mountain pipeline came one day after it also declared a national climate change emergency as Alberta wildfires continued to grow and force more people out of their homes. Those forced from their homes are often indigenous people, since many of their communities are in boreal forest regions, where the risk of such fires is greatest as a warmer, drier regional climate greatly increases the wildfire risk. What has happened in Australia, could happen here. In fact, the wildfire destruction of Fort MacMurray and the raging wildfires over two summers in BC in recent years, emphasize the need to shift away from fossil fuel production and subsidies that has continued under the Liberal and Conservative governments for more than 25 years since the risks of climate change became apparent.
Then the Liberals built a campaign around promising to deal with climate change and focusing on how much better they would be than the Conservatives. We'll talk about what has happened since the election, just a couple of brief months ago, in the next post.