Here’s the reason they gave why they did nothing about this:

But because the fake story appears to originate inside Canada rather than from a foreign power, the federal government’s anti-election-meddling panel ⁠— which hasn’t spoken publicly about the rumour ⁠— is unlikely to tackle it, experts consulted by National Observer said.

You gonna believe this? Trudeau goes after everybody that threatens him. This is a big accusation. If it were false, Trudeau would have destroyed this publication.