IIRC, this type of visa doesn‘t allow for establishing your tax residency in the country.
You are being granted “resident like” privileges ie. entering a housing rental contract, dewa, unlimited border entry/exit clearance etc but it clearly does not allow you to reduce your tax obligations by swapping your tax residency for UAE.
It has been︀ designed for Workation type of tourist, who have their tax obligations taken care of in︁ another jurisdiction.