It's a school example of logic. Just because you can add new premises or remove the existing ones, doesn't make it any less logic. I am not here to teach logic. If you don't get it, that's fine.
The freedom of religion argument is not hypocrisy.
Freedom of religion is not freedom to do as you like.
Does worshiping Talos actually hurt anyone? Despite what the Thalmor says (and anyone who listens to the Thalmor deserves the pointy end of a blade,) no it doesn't.
On the other hand, does sacrificing people to Daedra hurt anyone? ... I'd rather not get sacrificed. I'm sure my family wouldn't either.
If the Forsworn could say, worship their Old Gods without hurting anyone, I'm pretty sure the Nords would have left them well alone

Says who? I mean, really, who says what "freedom of religion" should include? What's the criteria? Not hurting anyone? Do you know how many religions would today exist in real world if you would to use that criteria? I can tell you right now that no Semitic religion would pass your criteria.
This is exactly what I was talking about. Orwellian "all religions are equal but some are more equal than others". Or in short: hypocrisy.
Your last line is especially interesting and I can reply with the same: If Nords didn't worship Talos in public, Thalmor would leave them alone. Did worshipping Talos in private hurt any Nord? No.
So Nords come and invade Forsworn land, take their country, and then tell them how they can practice their religion? May I ask how many Nords were sacrificed by Forsworn before they invaded them?
And once Nords settled here, what if Forsworn only sacrificed their own people? What if village decides each year whom to sacrifice from the Forsworn of that village? Internal matter.
I'll even go further and ask this: when a country drafts you into military without your consent, and threatens with shooting you if you desert, what's the difference with that and the same country/tribe sacrificing his own? A chance to live? Exactly. Human sacrifice still exists today, except it's legalized and it's called "draft". Draft is sacrificial lottery, there are "Chosen ones" and then some of these are "sacrificed".
The world isn't a fairytale. 90% of the population of USA that thinks human sacrifice is bad, would be *for* human sacrifice if they were born 1000yrs ago as Aztecs. They would take for granted that it's good, much like they now take for granted that it's bad.
I'm sure this all sounds so outrageous that I'm going to be instantly attacked as supporter of human sacrifice and "how can I say it's the same" etc etc. Well that's how it is, like it or not.
So I'll ask again, who decides what should freedom of religion include? I can tell you why I don't like the cult of Talos, and why I would forbid it. I would have a valid reasons but I wouldn't claim at the same time that I'm for freedom of religion. That would be hypocrisy. I would claim that I only allow those religions that pass certain criteria.
Forsworn religion didn't pass Nord criteria. And Nord religion didn't pass Thalmor criteria. That's that.