Originally Posted by
tentseller
Prevent misusing of citizenship and/or residency privileges by gamers.
Remember the Lebanon Canadian evacuation?
Yes, but I am not sure I see how this links to the eTA.
If you have valid PR status or a Canadian passport, you can travel to Canada. The "gaming" goes on to obtain / retain either of these two things. But once you have it, whether or not there is an eTA system makes no difference to your ability to travel.