Yeah, I think the uncle being kind and offering to pay for college and everything, will be duty-bound to watch you very closely for any misbehavior and will feel obliged to send you back to your parents if you come out to him. I'd rather come out to parents and take my chances with them (ok, to mother first, unless you believe your father is less hard core fanatic), than to uncle.
So, if you go to your uncle, your best bet would be to keep it top secret (and never around your house) until you graduate and able to survive on your own.
Well, to a point, this is quite dishonest, to use your uncle money and to plan to dump him at first opportunity. But it's your choice. If you don't want to owe to him, then try to get out on your own. And European countries might be better than USA (but being overburdened with other Muslim refugees, they might not really welcome you either).
Life is all about choices. Choose those that you can live comfortably with for the rest of your life and never look back.
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