Uh? I've already said that during taxy there is no need to touch the brake lever. The only times you need to operate it are before taxy (to set a couple of notches), after lined-up (to fully release the brakes), before landing (to ensure no brakes) and after vacating (to set a couple of notches for taxy).
On the vanishingly rare occasions you need a bit of brake in the last bit of the rollout you can use you left hand (you will never need brake and throttle together!).
Works a treat! Left hand on throttle at all other times! Where's the problem you allude to, Silvaire?
