Tyrannical governments must control the message:

Canadian Heritage Minister Steven Guilbeault appeared before the Standing Committee on Canadian Heritage last month and was asked by Liberal MP Tim Louis about “misinformation that somehow this [Bill C-10] would control, or regulate, or censor social media.” Guilbeault responded:

In the case of YouTube, for example, we’re not particularly interested in what people…you know, when my great-uncle posts pictures of his cats, that’s not what we’re interested in as a legislator.
When YouTube or Facebook act as a broadcaster, then the legislation would apply to them and the CRTC would define how that would happen. But really, we’re not interested in user-generated content. We are interested in what broadcasters are doing.

h/t @Natalia01Mateo