Easily. Ask the Christian Brothers. In fact, ask the entire social care system. It's not 'the establishment' which has enabled child abuse on a massive scale, it's society. Us. Me. You. Them.
Again, none of this sheds any light on the Dando allegations, which are of course all predicated on unfounded claims that she had 'inside information'. Have we even substantiated these claims yet? Has anybody seen the dossier?
See, it's all so flimsy, no matter what other, unrelated scandals you attempt to drag into the affair.
It has come to light that the BBC knew about the child abuse for years but did absolutely nothing about it. Dossier or no dossier, the BBC had been covering it up for years, so I don't see why you think they would have changed their tune upon hearing that Dando was willing to make unwanted disclosures? They had been covering it up for years and were implicated in the scandal, why would they suddenly start acting properly as a result of Dando entering the equation? If Dando did submit such a dossier then they would most probably have tried their best to hide it.
You say it is 'easy' to cover up this prolonged, government run child sex abuse, and then go on to blame the public for it having done so, but the truth is that if the establishment did their job properly, i.e not abuse children in their care,and if the Crown Prosecution Service actually did their job properly, and prosecuted MP's who were sexually abusing boys in care homes, and the government didn't issue D-Notices to the press, then it wouldn't have been covered up at all. It requires action and inaction by establishment run organisations for it to remain hidden. It isn't easy at all, it requires conspiracy within establishment run organisations.
The social care system is run by the establishment, and so is the Crown Prosecution Service. There are NUMEROUS reports that have documented abuse in council run care homes and on council premises. There are numerous reports that said evidence was put before the Crown Prosecution Service but it was ignored and dismissed.
Our current government has just run an investigation, and is eventually due to launch another more comprehensive investigation (once they stop stalling), into the existence and content of a dossier that was handed from one MP to the Home Secretary in 1984. Not only has this document gone 'missing', along with other reports like that into a North Wales care home, but it has taken 30 years for the failure to act on the contents of the dossier to become a scandal. If that isn't a cover-up, then I don't know what is.