Your position is that the State does not have a role in regulating the practices of a Church.
You are mistaken.
I think you’re confusing power with justice. The State arrogates to itself a role in regulating the practices of the Church. It has no such role by right.
How do you explain the fact, that although Canada grants her citizens the freedom of religion, that does not include the freedom to promote hatred from the pulpit? The state will intervene and stop that promotion of hatred.
If your right, then how do you explain that? You don’t have to agree with the states power in that regard, but at the very least, you must acknowledge the reality. No?
Canada does not grant “her” citizens any freedoms. Those are granted by God. The men and women composing the government of Canada protect some of them, are neutral about a few, and punish the exercise of still others. The fact that, if it comes to it, a police force will commit violence with a pretext to “stop that promotion of hatred” is easily explained by the desire of political elites to receive docile obedience from all they rule.
Are you interested in the facts, or would you rather be right?
Hm, maybe you are a subjective relativist. In reality, the only way to be right is to adhere to the facts.

There is no arguement. In Canada, the state will intervene and will stop a Church from promoting hatred. There is nothing to debate, this is the law.
There is an argument, and there is much to debate. Laws may be good or bad, and since the advent of the modern nation state, the vast majority of laws have been profoundly bad. The law is due deep and holy respect when it is a reflection of God’s law, albeit an imperfect reflection. Laws nowadays are only arbitrary rules of corrupt men, and are due only the prudent respect you’d give to a mob, gang, or wild animal. If they go so far as to compel you to commit injustice, then your moral duty would be to disobey.
Do you deny the existence of the criminal code of Canada, section 318 and section 319?
I do not deny its existence, just as I do not deny that church authorities sometimes unjustly discriminate. I deny that either that law or unjust discrimination has any right. In this specific case, however, there is no right to be an altar server, so there was no unjust discrimination.
I’m not sure how you can be certain that the state cannot legislate what can be spoken at the pulpit, when in fact, the law limiting that hate cannot be spread already exists and has been on the books for years.
Sometimes talk of ability refers not just to amoral, naked power, but to liceity. (See
definitions 4 and 5 if you like.) It’s an important distinction to keep in mind.