Evil, but 'unknown and unqualified' aren't quite the same thing.
If in effect we are saying supply teaching agencies are taking anyone in from the street, checking their DBS is clear and farming them out to schools as teachers, I agree that's a problem, BUT, just about all schools use agency supply teachers from time to time and as the teacher shortage becomes still more intense that's not going to change.
I absolutely agree with the points re photocopying and displays however.
Staff in LAs have to be paid for too and some are to be blunt criminally incompetent. I worked in a school where two teachers' DBS checks weren't back in time for the September
and where someone from HR chortled in a disciplinary meeting (not mine, I hasten to add) and admitted 'I don't really know the law.'
LA maintained schools have the veneer of accountability but that's what it is: a veneer. All that has happened is that it has been stripped away. There is undoubtedly a particular theme of 2010-s schools - of new shiny buildings, uniform featuring tweed skirts for girls and huge open spaces in the centre of the school. Some of it I don't like, some of it I'm indifferent to. But I don't think there was a golden age of teaching and if there was, it certainly didn't exist in the local authority.