Suff, you and I, and many others, might write off the almost 1/3 who had no opinion, or did not vote, as being irrelevant, but Classical Democracy considers their position as relevant.
Their 'votes' might not be counted in the modern tally, but in some places and in some votes they can overwhelm the 'voters'. See the PCC elections as an example.
It is why some places set a minimum turnout as a legal minimum and that the 'winner' must get enough delivered votes plus 50% of the 'abstainers' to get 51% of the total vote. That is more democratic in the real sense.
We do not have that in the UK, but the fact remains that only 37% of the UK wanted Brexit and not the 52% the media keeps foisting upon us.
One of the really worrying things about the referendum is that voters, on both sides, either felt that their side had won or lost, locally, and so gave up. They did not understand that the referendum was nationwide and that every vote counted, no matter where they were.
I blame the media for that for going on about the Scottish or Welsh vote or NI vote, when no such vote existed.