Internet censorship in the UK

Read this where it says "According to the civil liberties organisation Open Rights Group, the filters will not just block pornography but “also restrict access to sites deemed unsuitable for under 18s including information on alcohol and other drugs, forums, YouTube and controversial political views.”" So does that mean this steamgifts forum will cease to exist in the UK and does this mean all violent shooter games will also disappear? As I am 23 years old I can opt out of this censorship (I want access to forums), but what about those who don't want to/can't be bothered to "opt out"?

EDIT: What does this mean for every violent 18+ game on steam?

Also look at this!