Every Country Has good and bad project.There is no problem buying anything in the UAE with cash I think.
I talked to some real estate agents and they told me you can buy properties worth millions with cash easily.
Also you can buy any car here with cash as well. Really nobody cares.
If property in the UAE is a good investment is another question.
As you said, the quality is bad, looked at some villas and the quality was s**t.
In dubai , Biggest Developer is Emaar.
Some emaar project has world class quality, Some are not that Good.
You have to see individual Project for buying .
My experience is that Only invest in Marina or Downtown.
I think It is best investment.