Driving controls are all available on the stalks and wheel, volume is adjustable from the wheel or the centre console, all physical buttons, levers, or scroll inputs, unless you need to change a setting using the trackpad. The only thing that's missing is wheel control for skipping tracks :P.
I think it is a natural fit for the touchscreen. Tesla navigation is not perfect, but it is very good. You can pan/zoom the map with swipes which is LOTS better than buttons. You can also search for an address in specific or general terms and are not forced into some highly structured address format.
For example a ford I used had this weird out-of-order way of "enter street number" or "enter zipcode" and "enter street name" with a weird type-ahead/completion that was just... bad.
With tesla, you have a search field. You can type "123 main street, anytown" to find a specific address, or "home depot anytown". But you can just type "home depot" and choose from the list which puts recent on top, then closest to furthest. They also show up as pins all over the map and you can just choose one.
I guess you could also use voice nav. I kind of hate voice nav that is uploaded to the cloud (and they lie) I have an offline garmin car gps that lets me talk to it.
there are also certain things you’d want to change (or activate) often - we could argue those are controls. Like muting, changing volume, or finding a nearby gas station.