The advice is excessively cautious. Reading the “expert” views you might conclude that vaccines are useless. And then we will wonder why people are vaccine hesitant?
One expert notes we are likely to see post-pandemic, the greatest boom in international travel in world history. They did not go into it here, but as I have written previously, expect higher prices, higher fees (like carbon fees), more restrictions (too many travelers), and in the interim, more demand than supply for things like airline seats.