It's not that its difficult to get used to hold in reverse, it just makes it more difficult and dangerous to back up precisely with hold on. Normally I could roll slow and hover the brake, coming to a very precise and smooth stop. Going over bumps while reversing isn't going to cause me to potentially press the throttle a bit since my foot isn't over the throttle.
Of course its totally possible to back up smoothly with hold mode on, its just more difficult, provides no appreciable advantage, and isn't as smooth as doing it manually. Especially with the added uncertainty with regen, the braking distance inst anywhere near as predictable as manually controlling the friction brakes. If you're never backing into or out of tight spaces with very little clearance or bumps, this probably isn't an issue. But for me, I find it to be inferior, slightly annoying, and considerably higher risk than roll mode.
Moving forward these issues tend to be mostly mitigated. You're generally fully seated, have good viability, and its much easier to brace your leg against the center console while seated to ensure more consistent throttle input over bumps. Plus the following distances typical for forward motion tend to allow for much more considerable variation with no worry. Reversing there is often times a few inches clearance from the car to stationary objects. The regen braking does not stop to zero MPH very consistently. Sometimes the car can roll a few feet, other times its a few inches. I don't understand the logic that people should work hard to improve thier ability to reverse with hold mode when this appears to be an inferior system. And what about if someone else uses the car that's never driven a Tesla? They are likely to have these same issues, and its amplified from them being in an unfamiliar vehicle. It's likely giving someone the car in hold mode will increase the odds of them hitting something while parking in a tight spot. They are also more likely to not feel in control.
