Yes, M12 thread on bolt but M14 Multi Spline or XZN, or even triple square. I've just bought a set for my older daughter's 2019 Leon Cupra, it has the longer version of these bolts.
I'd think that many/most of us buy diagnostic tools and don't have a trial run of every possible use we might end up having to use them for.
I "dream" about creating maps for every controller on each of our family's VW Group cars - but not quite got there yet, even working out where the clutch pedal/master cylinder switches are monitored has not been done by me - and I'll need to find out soon!
Edit:- I came up against the "XZN M12 is not where your kit should end" many many years ago - when working on a 2002 VW Polo front suspension, for that I just bought a single M14 XZN bit, but now I've improved/extended the range of XZN bits in my tool kit! Actually also bought RIB - but so far, I have not needed that.