I think you are stating the obvious facts (which is fine) I wasn't professing that this was plug-n-play for US models, just showing that some manufacturers are addressing the issues in the aftermarket.
Alpine is making progress into specific vehicle solutions (and has been). They supply link modules programmed for specific vehicles to maintain aux displays (like TPMS , cameras etc) as well as vehicle specific mounts. In the US market its limited to Tacoma, Camry etc. No LC option here, not surprising since Toyota sells about 5 Land Cruisers a year here. As usual (late 100 Series), the USA climate control interface is a challenge that even the Alpine doesn't address.
There is always the "Tesla" display option from the various Chinese Brands.