In this poem, Birney seems to have a very negative view of his country. He sees it as a country that is not really all that significant. It is overshadowed by its parents (England) and especially by its uncle (the United States). Canada is like an adolescent -- it is not yet adult and has not yet figured out who it is or what it wants to be. It wants many things, some of which are incompatible with each other.
Birney does not say that there is anything actually bad about Canada. It's not a country that has become something evil or something chaotic. It's just that Canada has not found its place in the world. It is ambivalent about what it wants to be. Does it want to win the global race or does it want to avoid being like its father? It is still a schizophrenic country and it needs to find an identity.