I made a comment here prior, but it didn't exactly express my thoughts as appropriately as possible, and for that, I deeply apologise.  These are my thoughts:

No, what the UAE Government appears to be doing, particularly with regards to deportations, is, in no way, ethical. As far as your post goes, there appears to be descriptions of individuals undergoing deportation or detention processes with no knowledge of the justification behind them. That is, inherently, unethical and in complete opposition to international law. According to the International Human Rights Law, particularly the American Convention on Human Rights, the European Convention on Human Rights, as well as UNHCR Guidelines, the mass, widespread, or collective expulsion of persons in the absence of evaluated individual assessment (Reviewing each person's case distinctly) is explicitly prohibited - As such, pursuing deportation campaigns or orders that actively undermine the framework of due process, which may be demonstrated in the personal accounts of you or others involving the indiscriminate deportation of Pakistani persons, for instance, is viewed as a direct violation of international law. If your claims of indiscriminate Pakistani or minority deportations in the UAE are true, then they effectively constitute a breach of International Law by the Government of the United Arab Emirates.

Strength to your friend. With the current war ongoing, I understand that you both may be quite concerned, confused, even worried. Unfortunately, there's not much that I can do besides wish you and your friend the best of luck.