Yes, tyre pressure plays a big part - I have learnt that over 50yrs of (sometimes not very competent) motorcycling!

As for the rest, sorry don't agree. We will have to go about our motorcycling with differing opinions, and that's very cool.

But as for reality - my bike, for me, has always understeered, no matter whether I was running 24/24psi offroad, or 33/37 on road. The fork thing pretty much fixed it for me, so it was a good idea - for me. So you would probably hate my bike, I yours. Vive la difference, non?

As you correctly said, everything works with everything else, and that includes the rider and his/her experience, technique, fitness and (sadly) weight. We are clearly different, and as I said, that's fine and lucky for you!!