Not just that: my hands get dry enough sometimes that my phone's touch interface doesn't work reliably, in which case, I'd expect a touchscreen interface in a newer car would face similar problems. Physical buttons don't have that problem.
Your gas car in 2003 probably directly connects the accelerator pedal to the throttle ... but it also has an entire ecu with a whole bunch of stuff to figure out how much fuel to add given the throttle position / airflow and also almost certainly has the ecu controlling ignition too. Even my 1981 van has an ECU to sets fuel volume, although it doesn't have electronic ignition or water cooling.
You can open the throttle all the way, and if the fuel volume doesn't change, you won't get much in the way of extra vrooming.
That said, as simple as possible, but no simpler is a good goal.
But I'm not sure what I'm supposed to do with all these gauges and stuff. I have 0 interest in trying to repair my car or understand how any of it works. I just want to get in, have it be super comfortable, everything works and it gets me from A to B pretty fast. The only gauge I care about is the speed at which the car is traveling. Well the battery too I guess but if I'm taking a trip where that's of concern the car handles the stops for me.
I get that people do enjoy that stuff which is super cool - I'm not hating on it, but figured I'd just provide a different perspective maybe. For me the biggest concern is just this dog shit Android software and abandonware that all the manufacturers create (except Tesla funny enough - I'm not a shill or anything, Elon sucks and I'll never buy another one because of him) which I think is probably the biggest negative to the iPad-ification. Thankfully there's Android Auto and Apple Car Play but still the computers in the cars can be underpowered to use those.
LOL are you ready to perform a burnout every time you touch the accelerator?
Now I'm imagining drivers swapping tubes as they stop for a quick charge.