Religious freedom was tried once in Texas, and the JBTs were around in short order to muder everyone involved and destroy all the evidence in a huge fire.
We'll see how this goes...
Because they own it, and they can sell it to whoever they want. It is their property.
There are actually a lot of faith-based land developments in the US.
If they worship their God and respect our laws, then GTG.
If they want to force others on public property to abide by their laws, start creating parallel government structures, and start doing separatism?
That's a big NO GO.
On this we are in agreement.
That said, just because something is private property doesn't mean that running a community by the 'higher law' of Sharia... is acceptable or legal. The Constitution and USCA are the 'law' not Allah's dictates as interpreted by Mullah's or tribal leaders. And these communities in the US and, especially overseas, have utterly failed to recognize the laws of the countries they are invading. Look at Paris, Berlin, London, Glasgow and the entire UK Midlands, Frankfurt, Dearborn, Hamtramac, Stockholm, Wisconsin and the dozens of smaller communities where the Somali infestation is epidemic.
So your If's are spot on. Unfortunately that is not how it works out in reality.
And I point out the 'Mormon and Davidian' examples that were prosecuted (note I do not say persecuted). Because while, especially, Waco was a travesty in the LE and Govt. response... the communities were NOT abiding by the laws. Child abuse, weapons violations, bigamy (which shouldn't be illegal anyway)... etc. were all happening and being flaunted. And all can be well and good until your 'charismatic leader' decides that the whole place needs to drink Kool-Aid, suicide themselves to catch a Comet or gas a subway system. Or fly planes into buildings... Because the 'charismatic leaders' are frequently nutballs or radicals... followed by nutballs and radicals.
Maybe the 72-Virgins-land will work out great and be paradise on earth. More likely, it will be come Hell on Earth for women, children and sooner or later will become an apocalypse... or contribute to one.
Sirhr