The Freedom Convoy was a prolonged and illegal protest, that resulted in billions of dollars of damage to Canada's economy - damage that worsened with each passing day that it was allowed to persist. They also, essentially, harassed a whole city for weeks on end.
There was a reluctance to disburse the convoy by force due to the perceived risk of violence. Notwithstanding that trucks themselves could be used as weapons, a small portion of the "protestors" were stockiping guns, ammunition and other combat gear.
Much of the convoy was funded by groups from outside of Canada (mainly in the US). Cutting off access to their bank accounts put a stop to that, and forced a peaceful end to the process.
Even though a section of the public were sympathetic to the convoys concerns, few in Canada supported their actions.
During the same period in the UK, the Conservatives were passing laws to restrict the right to protest - but I never saw anyone call that "cancel culture".
And you can absolutely guarantee that if Just Stop Oil somehow occupied London for a period of weeks, whilst also blockacading the channel tunnel, costing the economy billions, and some within their ranks were amassing a weapons, all while being funded by donations coming from outside of the UK, the sort of British people who were critical of Trudeau's response to the convoy wouldn't be whinging about "cancel culture" if the government stepped in.