The problem is you go from "the Canadian federal government passed an emergency order using powers in existing legislation to disperse protesters by going after the bank accounts" to "a study funded by the U of Calgary is therefore untrustworthy because Canada is an authoritarian state".

I am in Canada. I'm rather disturbed by the actions against the protesters, but short of inciting violent revolution or a race riot, I literally cannot think of many things I do not feel free to say. As a Canadian, I'm also aware that the University of Calgary is an independent organization established under legislation, and funded by an entirely different sovereign government, that of Alberta. I'm also aware that Alberta, and Albertans, and hell, several academics at the University of Calgary, have been somewhat critical of the federal government's response overall with COVID. The province is run by political conservatives. The very last thing they would tolerate is the federal government mucking around in provincially-run institutions like it seems you are implicitly alleging.

There's a good number of steps between your A and B that you've hand-waved away as if they're obvious, but they're really not to me. How does the federal government's actions lead to this study being untrustworthy or false?

Their bank accounts were frozen for torturing Ottawa downtown residents and lawlessness that ensued. Not for protesting lockdowns.