Want to request feedback from Bolt owners who first found their seats uncomfortable. Does it get better over time?
This is something that seems to be highly personal, so I'm not sure that the answers you're going to get here are going to be very definitive for you. Nonetheless, I'll pass on my experience...
After reading about the seat issue I did my best to check out the seats before I bought, but here in Canada the opportunities are very limited and my longest drive was only about half an hour. But I had no problems during that drive and based on that I went ahead and ordered. Knowing that it was easy to add padding below the bottom seat cushion gave me a lot of confidence that even if I did have issues I would probably be able to solve them.
After picking up the car and driving it for an extended period of time (I spent over two hours driving it home the long way around because it was so much fun) I noticed that my right leg was feeling like it might be getting a little numb. That happened again on the next long drive, and I was starting to think about looking for some foam for the cushion, but now that symptom has disappeared and the seats are completely comfortable for me. I don't even notice the hard edge when getting into or out of the Bolt, although it's something I can feel if I pause to pay attention to it.
I believe my right leg issue was related to the one pedal driving mode. I took to one pedal driving like a fish to water - I really love it. But it does mean that your right foot doesn't get a chance to move around as much. My foot stays on that pedal all the time except when I'm actually stopped, at which time I move it to the brake pedal.
I had a similar issue with my Prius C, whose feather-light accelerator pedal caused me some right foot pain until I got used to it. The Bolt's pedal isn't so light, but I think it did take a little while for my leg to acclimatize to pressing on it pretty much all the time.
I've had several different people as passengers in the right seat and none of them has mentioned anything about seat comfort. The only comment I've gotten, from just one of my friends, is that she noticed as she got into the car that the seating position was higher than in my Prius C - which is certainly very true.