I see your concern, because it puts a focus on what rights may exist already under the various language regimes and schemes that are out there, province by province. If you're held to that, there may be an argument that you should interpret it in a way that says we're not going to entertain cases that are imaginative in this regard, because we already have this regime in place and we should take that into account. It seems to be a limitation.
On March 21st, 2023. See this statement in context.