If they are that ignorant then they shouldn't be allowed a vote

From the BBC report on the Lords blocking the possibility of a EU Referendum following the next general Election comes this passage:

'As it stands, the bill states that voters should be asked: "Do you think that the UK should be a member of the EU?"
...
The Electoral Commission has already said the existing question needs further thought, suggesting that some people are not aware that the UK is already a member and might not understand the premise as a result.'

If people aren't aware that the UK is already a member of the EU then they shouldn't have a vote on anything.