I agree with this.
If you want an economy where people have the skills to do the jobs that need doing, you need to invest in people. Instead, the previous government cut opportunities for adults to retrain and upskill. They prioritised academic schooling over the practical skills the UK needed - EBACC, anyone? They did nothing to offer businesses incentives to train up and upskill their own staff - instead they focused exclusively on making people richer. They cut SureStart, which prioritised families at risk of crime and unemployment.
If you want an economy that can work with fewer immigrants, you need to invest in your own people. I see nothing in any of Reform's promises that will deliver that.
And if you start mass deportations, the economy will absolutely tank.
Blaming immigrants is not the way to go. Demanding investment, offering businesses tax breaks to train up staff and also employ disabled people by offering hybrid working, jobshares, reasonable adjustments - this is the way to go. We also need root and branch reform of the education system so that we properly value vocational education; not everyone needs Shakespeare and trigonometry. We need to identify those young people whose interests and aptiudes lie in skilled trades and get them on that track early.
But the people currently painting roundabouts don't want any of that. They'd call it hard left and scream about it.