The videos above amount to midbrow/lowbrow fear porn, the kind you see all the time on the History Channel.
The chances of a giant tsumami emanating from the Canaries are still very, very small, practically negligible. And even in the very, very unlikely chance that it did occur, the US would have a 7-8hr early warning window. There would be a lot of property damage, but things would go back to normal quickly, with a positive economic spike from repairs and a hit on insurance companies.
In comparison, the chances of a nuclear war occurring this decade are well over 1000 times more likely, and the consequences of that would be hundreds of times more severe on a global scale, but we don't hear much about this, and there isn't much of an anti-war movement like there was in the late Cold War era. Back then, leftists anchored the peace and disarmement movement, while today, leftists are some of the most aggressive warmongers.
This being said, the fear porn from this is relatively marginal, it's not hyped up much in the mainstream media. The main reason for this is that this is a purely natural phenomena, which doesn't fit at all in the human climate catastrophe scenario, which itself is even more unlikely than a massive natural tsunami event...