~snip~
In fact, if the World Cup is held in three countries at the same time, football fans will enjoy the weather of three countries. This will be of great benefit to the travel enthusiasts. However, we football fans hope that the next World Cup will be more magnificent than the Qatar World Cup.
The US is so huge that they have vastly different weather in the same country. New York would have snow and someone in California would be at the beach. Completely different experiences.
Canada and Mexico are even more extreme, but I don't think they are really needed to experience a difference in weather with a huge country like the US.
There is some truth to what you say, but here I actually think that the 3 countries that will host the World Cup are adjacent countries so that the climate of the three countries looks almost the same so there is no need to adapt to the weather there.
Even though it will move places, I am sure that the distribution of matches in each country will be implemented by FIFA so that each team that will compete does not need to move from one country to another every time just to compete.
After all, the weather isn't an excuse that can make it difficult for a soccer team to take part in the World Cup.