I’m not a libertarian, and straw-manning will get you no where.
There’s also a reason we don’t dictate platforms and content.
We don’t force people to attend or partake in topless/nude beaches despite allowing them to exist. We don’t force people to join political protests despite them being a protected activity.
In the same manner, we don’t force newspapers to publish content against their goal or audience. There’s no difference for a site platform. There’s no reason “ChristianGram” should be forced to host nudity for Danish (and other) Christians, simply because Danes are allowed to be naked if they like.
The fact that you don’t see how that’s equally tyrannical and intrusive is, honestly, terrifying.
That will enforce less monopoly in social media, I am perfectly fine with that.