This is nonsense. I think you've created a problem in your head that doesn't exist. I've onwed vehicles with the filler on the passenger side and never once considered it to be an issue.
Given that it's basically an EV with a gas powered generator in it somewhere, what's it going to sound like driving on of these? I assume it's not going to sound like a typical generator running. Are they going to pipe in fake ICE exhaust noise? Something else?