That "article" appears to be a promotion for a test to detect maple syrup fraud in Canada.
It doesn't say maple syrup fraud is common in the US. It does cite an article about someone who bought fake syrup from a random "trucker" on the internet, but that article explicitly says it's not a big issue.
It doesn't say maple syrup fraud is common in the US. It does cite an article about someone who bought fake syrup from a random "trucker" on the internet, but that article explicitly says it's not a big issue.