As I've already said I'm very much on the side of keeping most of these messages, but I don't see having in-car fuel information being a big issue, at least not for any of the teams using the new LCD display. They all have fuel flow monitors etc.so it's just a bit of code to stick that on the steering wheel, I imagine. In fact I'd be mildly surprised if some teams don't have the ability to do that already.
Like others have said though there are hundreds of parameters that need to be monitored, not just fuel, and it's completely unfeasible for these to all be on the steering wheel, or at least unfeasible for the drivers to be constantly flicking through tens of pages on the steering wheel display all the time to check that car isn't going to catch on fire.