Because it's not free and open due to this 'Islamophobia' meme/parasite that has infected the brains of the loudest idiots in the political sphere of the West. Redefine that properly (because, yes, Muslims have been and are specifically targeted in some cases purely because they are Muslim; we have seen that) and then we will have the level playing field we must have to show Islamists and Islam the door -- which won't mean Islam will be illegal (again, that's wrong and there won't be a reason for it), but will mean that the Muslims will understand that they are but one part of the multi-religious West, with no hope of taking it over or ruling it no matter what their book, prophet, traditions, or false god have to say about the matter.
Right now, the West is being held hostage by this idea that criticizing Islam or the actions of Muslims is
racial hatred towards people (because of course Muslims and only Muslims are poor, oppressed arch-brown people
...Copts, Syriacs, Tewahedo Orthodox, the Christian Dinka and Neur who just fought for something like 50 years for the independence of South Sudan, the mixed Nubian-Coptic population in Sudan and Upper Egypt...none of these people exist), because of course there is such racial hatred as we've seen in NZ and elsewhere. So those who would criticize Islam are now on thin ice, socially and in some places legally (e.g., UK and other places where hurting someone's feelings can land you in jail), but it's still something that must be done.
As someone who worships with actual brown and black people from Africa by choice as often as I possibly can, I see through this equivocation (I learned very early on in my journey to Orthodoxy that you don't ask Coptic people about Islam or its conquest of their country unless you want a very long and very angry diatribe), but I also see why it's there, and it's not because of the informed criticism of the religion and its principles by people who have been oppressed by it for 14 centuries and counting. It's just that the West is full of useful idiots who can't or don't want to tell the difference between someone yelling at a woman in front of them in line at Starbucks for wearing a hijab and people protesting the fact that back in their homeland their 16 year old cousin was just kidnapped and forced to convert to Islam and raped by her new Muslim 'husband', producing automatically Muslim offspring.
That happens too, and what is anyone supposed to say if it's 'Islamophobia' to tie it to Islam when the perpetrators themselves do so, by their religion's allowance of both wives and 'what their right hand possesses' (slave girls and war captives, as in Muhammad's example with Maria al-Qibtiya, who was a 'gift' to him from the Egyptian governor Moqawqis)? We didn't make it be this way, yet we can't say anything about it because it's 'racist'?
So that all needs to go away, and Islam needs to be criticized just as every other religion is. It's the only way to defuse the superiority complex that drives terrorism from Muslims (the Qur'an says they are the best people ever created, while non-Muslims like you and me are "the worst of creatures" and destined for hell -- 3:110 and 98:6, respectively).
</rant> (sorry)