I do genuinely feel for you. I am a car-nut and simultaneously owned and E-type Jaguar (very low, nimble and stick shift), a 1997 H1 Hummer (ponderous, wide and high) and now the Hummer EV. Driving the Jag versus the H1 was disconcerting enough, moving from the Jag to Hummer HV was initially...
While I find the learning curve of one pedal driving extremely short and the experience very enjoyable. however, there are two strong reasons for using this method on the Hummer EV.
1) The recharging of the battery is more efficient.
2) Far more importantly, the Hummer EV is close to 10,000...