...but I must ask you: what are the alternatives?
Switch off the internet?
Put a 48 hour delay into all reported news?
Shout the thick kid down by means of a brief temporary ban until the lesson is learnt?
Take a personal decision not to contribute further (after all it’s their loss, isn’t it?)?
Go off and form a carefully guarded clique into which only the virtuous are permitted entry? (bit blooming lonely in there isn’t it Billy?)
I don't see any difficulty. Plenty of other sites have dealt with this problem.
Start kicking people off permanently, letting everyone know it's being done and people soon get the message.
Those who write pointless ignorant posts and those who just want to troll soon realise the game is up and go elsewhere.
If this is not done on this site soon then everone else will go and leave the adolescents here.