https://en.wikipedia.org/wiki/List_of_exports_of_Canada
Canada's exports consisting mostly of primary resources indicates its exports conform to what would be expected of a developing country.
The exports of countries such as the US, the UK, France and Germany instead consist mostly of secondary and tertiary exports, as is to be expected with a developed country.
https://en.wikipedia.org/wiki/List_of_exports_of_the_United_States
https://en.wikipedia.org/wiki/List_of_exports_of_the_United_Kingdom
https://en.wikipedia.org/wiki/List_of_exports_of_France
https://en.wikipedia.org/wiki/List_of_exports_of_Germany
As can be seen, a developed country is not one sorely lacking in secondary and tertiary exports. But some may set that aside and refer to other features such as Canada being ranked highly on the HDI at #9.
Meanwhile, the UK sits at #14, despite the Pound Sterling being at roughly twice the value of the Canadian Dollar, resulting in Canadians having far less purchasing power than Brits despite Canada being ranked higher. This in itself will indicate the HDI is not measuring quality of life, and is not measuring the economic development of a country. The HDI cannot be considered a meaningful or useful measure of a country's development in any way.
https://en.wikipedia.org/wiki/List_of_countries_by_Human_Development_Index#Very_high_human_development
http://econlog.econlib.org/archives/2009/05/against_the_hum.html
Then there is the child poverty rate of Canada.
http://www.conferenceboard.ca/hcp/details/society/child-poverty.aspx
At 15.1 per cent, Canada’s child poverty rate is over four percentage points higher than the 17-country average. More than one in seven Canadian children live in poverty. Canada ranks 15th on this indicator and scores a “C” grade.
Is the child poverty rate declining in Canada?
Not according to the latest statistics from the Organisation for Economic Co-operation and Development (OECD).
Transportation and infrastructure? Dangerously lacking, as would be expected of a developing country.
http://www.cbc.ca/news/politics/canada-election-2015-liberals-infrastructure-deficits-1.3206550
The Federation of Canadian Municipalities, which represents Canadian mayors, estimates the country has fallen behind in infrastructure spending by $123 billion since the 1950s. In some years, it would argue, there hasn't been enough invested to maintain what already exists, let alone build for the future.
That has led to what some economists call Canada's infrastructure deficit or infrastructure gap.
To assume Canada is already developed would mean overlooking it lacks the necessary economic base to close the infrastructure gap, and will be unable to do so unless Canada recognizes it is a developing country and readjusts its policies accordingly.
As a matter of public policy it's important to base decisions around the realities of a country's development status, otherwise policies will be misguided and failing to accomplish their objectives.
Given all of this, I am unable to deny that Canada is a developing country. Do you find yourself in agreement?