There is a good reason why Toyota places buttons in seemingly random places and with different action (some are up-and-down, some are toggle switches with clear offset between ON and OFF position, some are momentary only, some are textured while other are completely smooth). ERGONOMICS.
Airplane manufacturers learned that long time ago. If you make all the switches identical and "clustered", it's extremely easy to hit a wrong button. On the other hand, when buttons are dispersed and have different "feel", you develop muscle memory and you immediately recognize that you just actioned a wrong button. You don't have to move your eyes off the road to recognize what button you're touching. The same applies to gauges BTW. The best example of that is a fighter jet cockpit. In cars, they don't do it the same level, but the general purpose is the same. The best automotive example of this philosophy were old SAABs (SAAB was an airplane manufacturer, too). It's all about being functional and safe, instead of being pretty.
It takes a while to develop the muscle memory, but after a few months, things become a second nature, and you can concentrate on driving instead of guessing which button you just touched.
The only issue with Toyota is that they are not consistent across different models. The same action switch in one model can be located at a completely different place in another model. This makes swapping vehicles different if you have more than one Toyota and drive them frequently. BTW, German manufacturers (mostly BMW) use similar engineering, but more consistently across their product lineup.