I feel it a combination of things, comfort being one, but don’t discount what moving the weight backwards will do for low speed handling.
The rocket being only slightly rear weight biased, the rider position truly shifts the CG a ton. Compared to many other bikes this is different. Sport bikes have a massive forward bias, most cruisers a massive rearward boas.
By leaning yourself rearwards a few degrees you’re unloading the front tire, making it easier to move and essentially placing the CG directly under your butt pucker muscle, in line with your spine.
This should provide a very intuitive feel for what the bike is doing since both your head and the CG are almost in perfect alignment. Intuitive understanding = rider confidence = not just more comfort but more confidence making things “easier” because it feels natural.
As with all things R3, I’m generally an outlier and like my forward weight bias, I like sliding the rear of the bike around under me hard on the brakes, and I like being able to throw it at a corner with reckless abandon knowing it’ll stick.
Different tools for different jobs
PS: I should qualify I did RAA on a sportbike so my idea of “comfortable” is somewhat masochistic
