Earlier quoted context omitted.
It's not just Canada. "Free Speech" is no longer a part of modern left-of-center policy in general. Even the American ACLU no longer defines itself as a defender of free speech the way it used to. The argument (for what it's worth) is that the far-right is defending hate speech through the concept of free speech and so free speech is no longer worth defending as an ideal.
Would you mind linking to a source about the ACLUs changing relationship to free speech? I just looked at their website and it seems like they are still centering free speech as one of their major issues and a list of actions they have taken in recent years includes support of e.g. the NRA and an anti-muslim group.
Note that the shift has been quite recent (more or less since 2017) and not uniform; the ACLU does still take up free speech cases, while avoiding others, depending on various things.
Related, but not mentioned in the above articles, are tweets from prominent ACLU lawyers calling for banning certain books (see https://reclaimthenet.org/strangio-shrier-free-speech-suppre... for a reference, but this was quite widely reported). On the one hand, said lawyers have a right to their own opinions on their own personal twitter accounts. On the other hand, the ACLU never bothered to say that this opinion does not represent the ACLU organizational position....