This is actually very far from facts, this country has been on a steady decline since 2005.
https://cheung.artsci.utoronto.ca/wp-content/uploads/2022/03/Canadian-Happiness-Report-March-2022.pdf
Overall, our analysis found that Canadian well-being has been decreasing since the late 2000s. Although Canada finds itself at the top of most happiness charts, this downturn in well-being is cause for concern and greater involvement from policymakers. Given our findings, we think it is important for the Canadian government to gain a more in-depth understanding of changes to population well-being by monitoring SWB trends in the population. This monitoring can serve as a type of pacemaker which alerts the public when levels of well-being are low or dropping. Conversely, it can also monitor if certain policy implementations have had a significant impact on the Canadian population.