Everytime I hear this, I can't help but indicate the fact that the borders of those states kept on changing so even without conversion, the more the border territories were annexed by Christians, the more the remaining areas would have a bigger % of Muslims.
Actually Castille was during this period more tolerant than the Muslim Berber states as Jews and Christians fled north as the persecution started, not sure you could say it's less or more tolerant than Al-Andalus, as the real persecution started after 1250 or so and Castille didn't have that many minorities to persecute/tolerate anyways until the Caliphate fell.
Granada had Jews though, how can they not be considered natives? And I would reiterate the same point I made above, can we really say all the area owned by the Almohads in 1150 had NO christian in them? Not even underground ones?
Again, expulsion and persecution started mostly after Granada fell, but by then Valencia even was majority Christian, are we to believe that million of muslims were either massacred, expelled or emigrated when there is no account of that? To me it would seem that a on the other side there would have been many "Muslim on paper", I really wouldn't find unlikely that people that were forcibly converted would manage to hold to their belief for a century or a half considering the Berber dynasty didn't last that long.
I want to clarify in short a few things, because maybe we got off on the wrong foot here. When I mean tolerance I am referring to the pre-Almohad period, not the Almohads. I think in terms of Jews unequivocably there was better treatment for them in the Maghreb and Al-Andalus before the Almohads but that is a whole can of worms best not to go down right now, especially since I don't have my sources with me to back me up
I do know Granada had Jews, I don't believe I ever said they weren't natives.
We certainly can't say that the Almohad territories in 1150 had no Christians in them, but I think its very reasonable to argue that the number was greatly reduced from what it previously had been. Now, how many of those former Christians were muslim only nominally is a unknown, but I would imagine it was quite a lot.
I suppose I should clarify also, that many Andalusians had already been leaving conquered territories before the fall of Granada. I can't say on any region specifically, but there was already voluntary emigration to the Maghreb before 1492, so that likely explains the situation in Valencia, as well as other places (and also gradual conversion of course).
Interestingly enough, and unfortunately I cannot remember where I read it (so take it with a heavy grain of salt), that when the Christians did conquer the core territories of Al-Andalus like Granada, those hidden Mozarabs did come out and re-embrace christianity, but that there were not very many of them - indicating that the Almohads might have just forced the bulk of them out into Christian territories already.