Minorities and non-Muslims can practice their ‘spiritualities’ in any Arab country without resorting to ‘taqqiya’, which to my knowledge means concealement and not assimilation.
You would object to my blanket statement above by citing Saudi Arabia. OK, you can do that. But, there are reasons for it. Saudi Arabia is a tribal society and 100% Muslim since the early days. You may say, there are millions of migrant workers who are non-Muslims. True, but they are in the Kingdom under a contract which they understand very clearly before they leave their home countries. They know they can never become citizens, they cannot upset the prevailing customs, and they have to go back to their countries of origin when their sevices are no longer required. In return, they are usually compensated with very lucrative salaries and benefits.
There is a similar practice in almost all the huge multinational conglomerates operating throughout the world, companies that employ hundreds of thousands of workers. In addition to their regular staff (which you may think of as citizens of the company because they usually retire from the company. They’re there for life), these companies rely on a huge pool of contractors who provide essential services to the company. These contractors also get the lucrative contracts with huge immediate compensations, but they don’t get the long term benefits of the regular staff (the citizens). The regular staff usually make far less than the contractors in terms of immediate compensations. It’s not exactly the same when it comes to spirituality, but there are millions others throughout the world who would be more than eager to sign the contract with the Saudis and live with the inconvenience of taqqiya.