There is no contradiction whatsoever. Provincial jurisdiction is not affected by this kind of bill. This is comparable to a tax credit provided to young people who settle in a region, for example, to a tax credit for people with a disability and to many other tax credits that are now available, at the federal level, in Quebec or in any other province.
I am aware of no interpretation that would prompt me to conclude that this bill infringes on Quebec's jurisdiction. This simply deals with the people who have been cheated and whom federal lawmakers believe should be compensated for their losses, just as been done with other tax credits. There is no difference.