i guess arab have a great mind by building this wonderful island
The Arabs contributed the money... so in a sense yes.. they have a great mind. But remember that the construction was carried out by the Dutch companies Jan De Nul and Van Oord. The workers were mostly from South Asia (India, Pakistan, Bangladesh and Nepal). And right now most of the islands are under the possession of Russians and Americans.
Not entirely true, there are some areas where foreigner companies had to intervene in areas where the huge arab building holding (that owns many of the currents projects) lacks expertise, (not annyone has the technology or the mean to build an artificial Island that will harbor building, and that will response to a requirement book (being it technical, resistance to tidal forces, earthquakes...ect ect environmental one and most importantly in terms of cost, since if you have the expertise and the knowhow you are more efficient than someone who will start from zero) but many parts of the project, especially the traditional part, and also the design was worked out with those holdings, as for workers yes, they come from foreigner countries, which is normal for the region, with a very low population, I'll give an example, Qatar there is 2 million people, less than half of them are Arab and original citizens (40%) the rest are all from migration.
Right now they are building infrastructure everywhere, investing in everything and the original population is far from being enough and doesn't want to do low level basic stuff