This perception is possibly because there are some areas in the Du Telecom network that have no, or less, censorship of the internet, for example Dubai Media Zone and the TECOM area.The TRA has said in 20 that these areas will have to come under the UAE censorship policy though.You may already know some of the players through your friend network, or you can meet new people.
And those who desperately want to access the blocked websites usually find a way eventually (using a VPN is one way to access blocked websites from what we've heard).
Users are encouraged to report any instances of indecency.
Objectionable content will be reviewed and responded to within a 24-hour period.
For the most part, internet censorship is not overly draconian in the UAE.
Certainly, much less so than somewhere like China or Iran for example.