A deterrent effect on those who might be contemplating undertaking those kinds of acts...?
I think if an individual appreciates the gift that is Canadian citizenship and the potential for forfeiting that gift as a result of particular actions, it very well might have that kind of deterrent effect.
I do know we have to move away from thinking exclusively of entitlement, and that citizenship in this country requires commitment to certain values, a certain code of conduct. If someone were to declare they hated Canada, they hated everything this country stands for, we would scratch our heads if they were to then express a desire to be part of this country. These kinds of acts are tantamount to saying that, because they're antithetical to everything that we stand for.