I do think it fits into the wider discussion of what we expect people who come to another country and culture - and their descendants - to do, and if we should allow certain changes to the values we have set for ourselves. Thing is, here two sets of values conflict: the one to choose what you wear, and the one to not have someone mandate what you wear. Which is a conflict that will never be resolved.
I am of the opinion that the burqa and what is stands for conflicts with women's rights. But banning it conflicts with religious rights, but I think those are less important in this instance.
This doesn't make sense tho. I mean let's look at everything you say in favor of a ban. You mention the need to adapt to a new host country and accept their values. But what are those European values? In my opinion those values are personal liberty, freedom of expression and freedom of religion. Equality is also one of our core values but I take equality to mean freedom from discrimination and the equal opportunity, regardless of gender, race, sexual orientation or creed, to pursue your own happiness and express yourself as you see fit. How is a woman deciding to live by a very conservative interpretation of islam in opposition to those values?
A Dutch christian woman living in the bible belt who decides to stay unemployed because she believes her place is in the home and who sees her husband as the rightful head of the household is obviously living a lifestyle that sees her as unequal to her husband. That lifestyle is also tied to a larger religion and therefore not strictly speaking completely her own idea. And yet that doesn't mean she is not living in accordance to our Dutch value of gender equality. Why can't the same be true for a conservative muslim woman.
The only way a woman deciding to be a very conservative muslim is in opposition to our values is if those values include showing your face in public. Some might argue that's the case but I disagree. I don't think anyone is entitled to see anyone else's face and I don't think forcing someone to show their face is an important part of European society. Now, there are certainly places where facial identification is necessary but we don't need a general or even particular ban to make sure that still happens. Right now, while the Dutch face veil ban is still being discussed in our senate, face veil wearing women already identify themselves where necessary.
There is, however, another important part to your argument. You state, without any proof, that most or even all women wearing a face veil are forced to do so. I don't think that's true. I have shown multiple examples of women, including adult converts, who can eloquently explain why wearing a face veil is their own choice. If your only response to that is "well, they're brainwashed" I don't think you're actually being very progressive or feminist. Why would an adult convert not born into a muslim family or from a conservative muslim community be brainwashed when she dons a face veil? And if native converts can make that decision voluntarily why wouldn't minority women also be able to do so. It's not a very compelling argument at all.
An other thing people might say is that those women, the women we can actually see and hear, are a small minority and that there's a larger group of women (even though face veil wearing women often barely number in the couple of hundreds in western countries) who go invisible in society and are forced to wear a face veil. I see no reason to just assume so but I also have no reason to doubt that there are at least some women who are indeed forced. But then again, there are also women forced to wear a hijab. Forced to not wear jeans or short skirts. The problem there is not the article of clothing but the forcing of it by others. Do we really solve that problem with a ban on face veils? Such a ban would do nothing for the women forced to wear or not wear other articles of clothing. If we want to help all those women, and I certainly do, then we would do better by investing in cooperation with mosques, sharpening our domestic abuse laws so that such behaviours are easily punished and increasing awareness among minority women of their pathways to legal protection.
In short, I see no reasonable argument that a face veil ban is either necessary or helpful for women currently wearing one.
This is to say nothing of the fact that face veil bans don't arise in a vacuum but should be seen in the context of the islamophobic atmosphere of which they are a part and the role played by bigoted far-right parties and the more centrist parties hoping to siphon off some votes.
France, Netherlands and Belgium, the poster boys of authoritarianism... banning something does not automatically make it authoritarian. We ban stuff all the time that some people think should not be banned.
I'd argue that Continental Europe is certainly less free than the Anglophone west, especially in comparison to the United States. While we do some things better than they do I would call their commitment to personal liberty and freedom of expression admirable and superior to ours.