New drivers are taught to drive in a way that minimises emissions, hence the high gear soonest methodology. Low revs equals fuel efficiency, which as we all know, isn't necessarily the optimum way to use a manual gearbox.
Peter, you mention slowing using brakes and not gears to slow. This is correct, unless you select a gear to hold your speed. Brakes are for braking, gears allow the engine to adapt to the speed.
I'd prefer an automatic option, but ultimately I wouldn't take it as a Morgan is something that I'd enjoy using manually. When it comes to changing the driveway car, I will seriously think about a slushbox because driving in traffic is just so much effort with a manual & clutch.
There is a school of thought that says elderly drivers shouldn't drive an automatic either - how many YouTube video's do we need of people hitting the wrong pedal..??