Either courts will worry about such a document or—since his mother was a US citizen—they won’t.
According to US law, US law trumps Canadian law—so if Canadian law saw him as a citizen who must have a Consular Report of Birth to prove him a US citizen... that doesn’t matter.
This is silly. The First Congress’s law of 1790 declares, “And the children of citizens of the United States, that may be born beyond sea, or out of the limits of the United States, shall be considered as natural born citizens.”
First Congress laws—since that congress consisted of those who composed the Constitution, the Founding Fathers themselves—are the strongest indicator of original intent...and definitely are much more relevant than Canadian law from 200 years later.
End of story.
“...children of citizens..” Note the plurality.
Except that’s not quite the end of the story.
The 1790 Act was repealed and replaced in 1795 with the passage you quote from 1790 eliminated. Perhaps they did so because the 1790 Act defied the orginal intent regarding NBC.
It’s amusing to me how people who tout the 1790 Act as definitive on the subject of NBC never seem to mention that the 1790 Act was repealed in 1795 with their preferred NBC definition removed from the law.