As I mentioned in a comment above I'm not aware of any individual that had their personal savings frozen.
I recall a lot of reporting that it might happen and I recall a question time in which the accusation was made that it had happened but when pressed no actual details of to whom could be provided.
That dates back to about the time of your linked reporting which also talks about the potential for abuse but does not cite an example of abuse.
If you have an actual verified account of this actually happening it would be of interest.
Either. I don't really understand that anyone would think that a government being able to freeze someone's assets for protesting that government is a good thing.
This isn't the potential for abuse, in a sort of "price of freedom" way. This is an abusive power that, at best, was not used.
[0] https://www.bbc.co.uk/news/world-us-canada-60383385