Even more infuriating when not only is it not customisable, but they layout they do use is just… bad in a thousand different tiny ways.

For example, the tachometer and speedometer on my vehicle have two display modes. The traditional looking dials and a more compact vertical wheel that leaves more room in the middle of the display for other things.

…but those other things are almost always either useless (I don’t need to see a little picture of the vehicle I’m driving), or actively worse (the media info screen actually shows fewer characters in the larger mode).

It’s not unusable, it’s just varying levels of awkward or useless in dozens of little aspects.