A massive problem with the comparison to the olden days of 'my dad didn't get any qualifications and it didn't do him any harm' is that we aren't living in the olden days anymore.
The jobs that kids could leave school and go onto without qualifications are mostly gone - I mentioned upthread the factory near my school which used to be a big local employer closed and went overseas and the same has happened to so many other factories leaving a hole in local employment prospects (not quite as bad as what happened to mining communities but still a significant loss). Then you have lots of other jobs which were done by humans now being done by robots or computers (e.g. self-service everywhere). And there is a population bulge coming through secondary schools.
What we absolutely don't want to do is shut down kids' options before we need to. We have to give them every possible chance to get that grade 4+ in maths and English which will keep so many doors open for them. We absolutely cannot decide too early on that some are destined to work in 'local industry' and clip their wings.
One problem we had with work experience back in the pre-Gove BTEC days was that kids who opted for a particular route like construction or childcare would do work experience one day a week, which seems great, but what that meant was missing a day of school a week. They were missing a quarter of their maths lessons, which obviously impacted their ability to get the best maths GCSE grade that they could. So we really have to be careful about work experience if it means missing school.
Another point is this view it creates of school as a utilitarian institution designed to churn out workers for local companies rather than an institution designed to educate children to be well-rounded citizens. Where is @piggywaspushed ? She is always very vocally scathing of the suggestion that kids should be learning something useful that will earn them money instead of studying Shakespeare.
Is it critical that kids start learning bricklaying or hairdressing or plumbing skills at 14? Or can they learn those skills just as usefully (or in fact in a far more useful way) at 16, and should they have the opportunity to study art or music or drama while they still can at 14?
There is definitely a problem in schools where underfunding has meant that schools have had to make teachers redundant and cut courses - and these have obviously been the subjects that don't count towards the Ebacc or are restricted in Progress 8. Art, music, dance, food tech, product design...widen the GCSE offering again. Roll back the cancelling of BTECs that could be done as an option without hampering the rest of the curriculum and recognise them in league tables measures.
Save the narrow vocational-focused curriculum for post-16.
What to do about the disaffected kids who aren't engaging with the curriculum? That's a really tricky one, a pp mentioned ASDAN courses that we used to run before Gove. Pre-Gove we used to enter them for their maths and English GCSE in the November Y11 sitting in an effort to try to get them some qualifications before a bunch of them inevitably stopped showing up for school. Or they'd often get put on 'early study leave' before Easter. The huge focus on attendance now means that a lot of those kids (I say kids, it's usually boys) who used to stop turning up now turn up for the whole of Y11 but obviously aren't particularly engaging with the work.
Something needs to be done for them but there are a lot of constraints on schools at the moment with league tables pressures. I don't think expecting local employers to take on and sort out this particular group of kids at 14 is a winning solution though. A lot of disaffected boys have issues with literacy - maybe tackling this as a priority early on would be more effective?