This is likely to flare up and disappear just as quickly
To put things in context:
1) The UK Government has a TERRIBLE track record in terms of IT projects; the chances of this initiative going beyond blowing a few million on starting up another failed project are slim
2) This is part of a manifesto promise by the Tories. They have to be seen to discuss it. They can then decide it's too difficult and blame "Johnny Foreigner" for the problems.
It's part of the "something must be done!" - we've done 'something' - job done! syndrome. Whether the 'something' done has any effect or not doesn't matter; the box has been ticked.
3) It's in reaction to certain areas of the news media [though to call the Daily Mail and Daily Express newspapers stretches way beyond credulity]. Certain parts of the UK establishment have fixed, knee jerk reactions against anything post 1950.
Before others get too smug, this is more or less the sort of behaviour that would result in other countries where their particular sensitivities were challenged (e.g. wake me up when an atheist has a serious chance of running for US president)
4) Look at it as an opportunity for certain sections of society to vent feelings and then move on. Rather like a letting a child get a tantrum out of their system and then learning that the world hasn't changed to suit them after all. Actually this is true of a lot of issues - they are very rarely as extreme as some folks on Slashdot would like to believe.
Finally, as for the comments that people should take responsibility for what they/their children view - I agree. That said, there are far worse things on line [in my world view] such as severe violence that I would consider much more deserving of concern.