It’s pretty clear he’s only interested in this as a way to further the party’s current austerity programme.

Let the actual experts figure out if there’s an over diagnosis problem and sort it out through the proper consensus forming channels rather than having politicians cherry pick the expert who most aligns with their view.

If you’re going to do benefits cuts against people who are mentally ill specifically, just do that rather than trying to get mental ill health massaged out of the statistics so that you can launder your reputation.