The central issue with invoking the Emergency Act is twofold: First, it is a step too far in consolidating state power against dissenting citizens. Second, police already had the tools they needed to deal with the occupation in Ottawa but chose not to. If the police had exhausted all their options first (which are routinely used against Indigenous and climate change protestors) then Trudeau may have a case. This did not happen.
In the end, workers are attacked on two fronts via inflation rhetoric. First, by banking CEO's who claim workers make too much money, and second, by the Conservatives who claim that they received too much government support during the pandemic.