Well, that is true to a certain extent, but it doesn't even rank in the top three sports for popularity in the US, so past that, you are just splitting hairs.
Supposedly, the top sports in the US based on viewership are:
1. football
2. basketball
3. soccer
4. baseball
5. hockey
[
source]
The Canadian results seem to vary, depending upon what site you look at, as when you search for popular sports in Canada, you tend to get a lot of results for the sports people like to
play, like golf, not what they are
watching.
In Canada, they are listed as:
1. Ice Hockey
2. Lacrosse
3. Football (I think this is referring to soccer)
4. Baseball
5. Canadian football
[source]