As others have said, CPP is a legal ponzi scheme that will eventually collapse. Increasing CPP contributions makes it so the ponzi scheme will survive a little bit longer.
Why do you think CPP is a ponzi scheme? It is well funded, and considered sustainable.
http://www.osfi-bsif.gc.ca/eng/oca-bac/ar-ra/cpp-rpc/pages/cpp26.aspx
Under the 9.9% legislated contribution rate, the assets are projected to grow rapidly over the next decade as contribution revenue is expected to exceed expenditures over that period. Assets will continue to grow thereafter until the end of the projection period, but at a slower pace, with the ratio of assets to the following year’s expenditures expected to reach a level of 6.0 by 2050. Thus, despite the projected substantial increase in benefits paid as a result of an aging population, the Plan is expected to be able to meet its obligations throughout the projection period and to remain financially sustainable over the long term.

