Moving the Canada is perfect for any disillusioned American. When slavery was institutionalized in the United States, many runaway slaves escaped to Canada and were completely surprised at how well they were treated, and the amount of dignity they had as human beings.
Canada was founded by the British and remained a British Colony, even until today. It's institutions and foundations are what they are because of the British, and the Canadians should be proud of that. Just look at the differences between Canada and the United States: Canada is definitely more harmonious and cohesive than the United States. They also have a higher quality of life.
Yes, moving to Canada is a viable option for Americans to escape a Trump presidency because Canada is one of the most developed countries in the world and also has one of the most diverse population. Although Canada is viewed as an inferior country to the United States by most Americans, the country is economically robust and accepting of all people regardless of their ideological views.
Though they will never actually move to Canada, the act of declaring that they are willing to undertake the journey is very symbolic in white culture. It shows that their dedication to their lifestyle and beliefs are so strong, that they would consider packing up their entire lives and moving to a country that is only slightly different to the one they live in now.
America is a major country, and what happens in America is felt across the world, in many cases. If Trump has his way, then Canada and anyone therein will feel the effects of his foreign and economic policy. Take the economy for example. If Trump helps the economy in America, then all of the international companies based in America will benefit, and that will affect the worldwide economy, and last time I checked Canada counts as part of the world. If he implements his immigration plans (border wall, banning Muslims) Canada will probably have more Muslim refugees coming in then before, and will have a more isolationist USA on its southern border.
Canada is not a viable option for Americans trying to escape a potential Trump presidency because it is very difficult to emigrate to Canada. While Canada is very easy to visit as a tourist, it is difficult to get residency in Canada. Canada also requires that employers hire Canadians unless if they can prove that it is essential that a foreign candidate is the only person who can do the job, so it would be difficult for most Americans to find work in Canada.
Americans wanting to flee the country and take refuge in a different country would be hypocritical. Under the current foreign policy, America has been generally unwelcoming to refugees trying to flee the Middle East. If we are unwilling to accept people into our own borders trying to flee a bad situation, there is not a good reason that we should expect different behavior from other nations. Not to mention, the situation is not nearly as bad comparing America having Trump as president to trying to flee a war-torn country being run by radical terrorists.