Then why are we taught NOT to touch the front brake in corners during our training, then?
As I and most riders I know were taught:
Handful of front brake - Weight transfers to the front, back steps towards outside of corner, inertia carries bike forward, weight on front creates a pivot point while gravity drags bike down = Lowside crash.
Rear brake - Traction increases on rear, front lightens, rear drag makes front step towards inside of corner = bike stands upward.
Yes, you can use a *little* front brake in some corners (depending) but nowhere near as much as normal braking and it's not something you can just do without a feel or some experience.
From CBT: http://www.begin-motorcycling.co.uk/elc2.htm
If you must brake in a bend
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Avoid using the front brake. Rely on the rear brake and engine braking to slow you down. If you must use the front brake, be very gentle. There's a risk of the front tyre losing its grip and sliding sideways
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Try to bring your motorcycle upright and brake normally ( provided you can do so safely )