The ergonomically sound "three button" system has been dropped simply because it is a "three button" system: There is no longer enough room on the housings for so many buttons.
Blame those who want to be able to select suspension settings without resorting to a grubby spanner or check the tyre pressures without bending down, those who cannot journey anywhere without a button to tell them how much fuel range they have left and for whom a cruise control must have a 'resume' function because they cannot work the twist-grip without guidance.
For anyone with even the slightest dexterity, the "three button" system is quickly understood and becomes so intuitive in such a short time that they find the indicators seem to work without the rider consciously operating the buttons. That rules out most motorcycle journalists and the sort of people who cannot stir their tea without sticking the spoon up their nose.
How do such people cope with the variety of switch gear found in cars?