You may want to read up on this article:
https://gulfnews.com/business/sectors/markets/confusion-reigns-on-bitcoin-trade-in-uae-1.2112365It's basically accepted practice to trade and accept bitcoin, in the UAE, it seems. I mean, the governor of the central bank itself has said that bitcoin is essentially exempt for the ban on "virtual currencies", and there are still a major exchange in BitOasis operational, which wouldn't happen if bitcoin was banned in UAE.
It is legal and there is BitOasis, an exchange that allow you to buy crypto using AED. It's worth mentioning that they made an announcement about suspending (4th June) Dirham deposits and withdrawals yesterday.
I don't think crypto currency is legal in U.A.E. They are pretty much maintaining a neutral status until recently by defining crypto currencies as "high risk investment". Also they are seeing crypto currencies as a tool for money laundering and terrorism financing. So they are on the way to prepare a legal framework for governing smart contracts, liability matters, dispute settlement mechanisms and taxation of generated transactions and profits. So it is not the right time to say "crypto currency is legal in U.A.E". The businesses are allowed to operate because of the absence of a proper legal framework but we don't really know what will happen in the future.
Legalization and allowing something are probably two different things. Most countries like you said, are negative to neutral on bitcoin. UAE seems to be the same right now. New regulations probably will come soon to clarify these misleading and confusing details.