Have you ever ridden a motorbike or had motorcycle lessons?….ever attended any kind of advanced driving course?
If so I’m preaching to the converted so ignore me…..but a spinning wheel without any braking forces on it (particularly bikes where grip is at a premium with only two wheels) has the maximum amount of grip it can generate, applying braking forces slows you down and may give the illusion of more grip but in reality you are asking more of the tyre and it will let go shortly.
On motorbikes we were always told that if coming into a corner too fast don’t panic and brake, the wheels will lock and you’ll go down or the braking forces will make the bike sit up and you’ll go headlong into the tree, oncoming traffic etc that you were trying to avoid….instead just keep leaning and turning, the tyres will see you right….same for cars, never brake mid corner unless you’re trying to provoke a skid, get it all done on the straight and take the corner off the brakes and enjoy the traction of the tyres and pass it off as your riding skill!
I cover my brakes with a forefinger on each hand but don’t feather them on a run, I brake for as reason then come off again for any corners, features etc….try it on a section of trail you know well.
(Just seen your above edit, reeled in hook line and sinker).