The term “glass cockpit” doesn’t mean there aren’t buttons. It just means the flight instruments are video screens instead of analog dials.

Glass cockpit of an Airbus A320:

Analog cockpit of a 727:

Jedit:
And I have no problem with both being in Star Wars just like both currently exist in the real world (though most analog cockpits are on older planes these days) and there are LOTS of planes that have been partially updated over the years to be a bit of a Frankenstein hybrid between the two.

But I agree that many of the prequel designs look too different aesthetically to really feel like they fit with the OT stuff. They’re too sleek and clean and neat, whereas the OT designs are more rugged and utilitarian.