As it says in the title, the BBC is starting its own Mastodon instance. I think the CBC (and other news networks) should do similar. Particularly with the recent passing of Bill C-18 it seems like a world where the links we share are crossposts to news organization’s own content is the perfect resolution to that whole issue.
They would be fulfilling different roles. The social.bbc site isn’t going to be open to the public but rather specific to BBC content and journalists.
Plus an account in a potential social.cbc.ca domain has the advantage that you know automatically that it’s a legit CBC account.