Really good point nimrod. If correct, that's twice now that a tory leader has called a GE/referendum to re-enforce their own position and it has backfired spectacularly. Which kinda shows how top level tories, and the tory mindset views most people with contempt, or at least without any empathy.
Cameron and Mays legacies will be one of division and creating lots of nastiness. Cameron divided the country, and effectively gave racism an increased platform. In addition, his administrations hammered disabled people to such an extent that numerous people now feel that this kind of action is ok, and reasonable:
https://www.bbc.co.uk/news/uk-england-norfolk-44858107