Probably the same with all the consultancy type firms like Capita, Accenture and so on. Spent years mopping up a subset of graduates into their schemes who then all think and sound the same and provide no real spread of ideas.
That said it's part of a wider change in the scheme of things from what I can see. I'm a "Grad Scheme" starter a couple of decades ago yet what I joined with slowly dropped below the requirements. Then the same scheme has slowly died over time and they have changed it instead to picking up people before they go to Uni, presumably trying to offer the opportunity to avoid a student debt whilst acting like the knight in shining armour when in reality they are just trying to get the cream of the A level crop first. Also getting A level and apprenticeship type roles seems a shift in recruitment too, catch them as soon as possible basically.
But at the same time, much like the original KPMG story, if you pick up people at 16/18/21 and then funnel them all through the same training and ideology stuff, you just end up with even more corporate clones. Which seemingly isn't what they are actually trying to achieve