This is probably true but I think it is not a problem as long as the nonsense is confronted.
It is the knowledgeable people's (and BrowserUk is one of them) burden to make the world a better place by pointing out where less knowledgeable spread nonsense - again and again and again.
This is exactly what the trolls build on: To waste other people's time. Your argument appears to support the trolls in this effort. You said below "I don't vote at all when at least I should have downvoted some postings", and your posting history shows that you've replied to the monk who we are talking about only three times so far. My suggestion to you is that you try the policing and technical refuting that you are advertising, and maybe then you will get an idea of why several monks are supporting a more efficient way to go about it.
I can understand that BrowserUk is getting tired of it but everything else would amount to censorship....
Sorry, but that's complete nonsense, as it usually is when the word "censorship" is uttered on the internet (except in China). You said below you live in a country where holocaust denial is illegal. No matter whether it's morally supportable, that's censorship. The current suggestion above is not censorship, and here's why: First, the current suggestion is to simply hide or label such posts - everyone is still free to read them. Second, the individuals are still perfectly free to post their opinion in other places where everyone can read them.