I looked up the story and couldn't find anything except in highly biased media outlets, but the Canadian government has this on its website:
It's not clear what information the registration requires, although I also see no reason to conclude that there's censorship based on the mere requirement of registration. I think assessing such a conclusion would require more details about the registration and the specific purpose thereof.
First, the CRTC is setting out which online streaming services need to provide information about their activities in Canada. Online streaming services that operate in Canada, offer broadcasting content, and earn $10 million or more in annual revenues will need to complete a registration form by November 28, 2023. Registration collects basic information, is only required once and can be completed in just a few steps.
CRTC takes major step forward to modernize Canada’s broadcasting framework - Canada.ca
Today, the CRTC is advancing its regulatory plan to modernize Canada’s broadcasting framework and ensure online streaming services make meaningful contributions to Canadian and Indigenous content.
www.canada.ca
It's not clear what information the registration requires, although I also see no reason to conclude that there's censorship based on the mere requirement of registration. I think assessing such a conclusion would require more details about the registration and the specific purpose thereof.