For some people it will mean absolutely nothing. Especially older people with no intention of applying for a job.
What does is really matter? They don't tell you so it's not going to worry you. There's no crime so you haven't broken the law. There's no fine, prosecution or imprisonment.
It's a non crime.
Personally I don't mind if it's recorded somewhere that I did not commit a crime.
Obviously people in work who need a clear DBS will be frightened into submission by this law but there must also be lots of us who aren't?