Canada obviously doesn't have jurisdiction over foreign donors, so depending on how GiveSendGo implemented their money transmission flows it may not have been possible for the government to distinguish between domestic and foreign financing sources. I agree that domestic money flowing within Canada (to e.g. support Charter-protected actions of others) should not be impeded without a higher degree of scrutiny.

This said, I love Canada and don't believe Canada should tolerate one iota foreign interference in our domestic affairs, especially if it sows division or reduces trust in Canada's institutions. Whether you believe the blockading of border crossings, occupation of Parliament Hill, and disruption of peace in Ottawa were peaceful protests or unlawful assemblies, they were amplified and prolonged by foreign money. Canada should rightly do what it takes to nip foreign influence in the bud.