Not sure why someone would rate this as negative. AER site is only data. Leave the politics out of it. The data is as good as the industry reports, so take it as the only real source of data regarding the environment in Alberta
This is a legitimate government entity. Their website launched in 2014. It seems the 2012 complaints were inherited from whoever previously owned the URL.
Of course you might not like what's in the website depending on your stances are on energy development.