I assume you mistyped, and meant "wiring". I don't think so: usually, the buttons will be on assemblies with many buttons together (such as the A/C control pan

I assume you mistyped, and meant "wiring". I don't think so: usually, the buttons will be on assemblies with many buttons together (such as the A/C control panel on my 2015 car), with a PCB inside and probably a small microcontroller to talk on the CAN bus, so in the factory, the worker only needs to plug in one electrical connector. That's really no different than a touchscreen system, which also would presumably have a single connector for the whole assembly.