A great point I overheard recently was that this precedent is likely to be used in Canada against indigenous peoples protesting resource extraction and other incursions onto their land. Now a blockade can be a "terrorist act," etc., and their finances can be frozen among other things. This power is not just going to be used against some wacky antivax truckers this one time and then forgotten about.
I dislike the term "financial deplatforming" quite a bit as it minimizes the severity of freezing someone's assets. This isn't like being kicked off a media platform. Having your assets frozen doesn't just deprive you of your livelihood but also prevents you from defending yourself since lawyers cost money. It's one step short of imprisonment.
It's also being done by the government. Get kicked off a private platform by the owners and you can just go elsewhere. That's not the case if the government is seizing your assets and also says its illegal for anyone else to do business with you.