Maybe that is what Dan means by poor design?
Warning highly opinioned discussion of engineering design
The brake controller is there in case of emergency, for decades they've been one design, for safety. Which is on the right side (most people are right handed), easy to reach and have fine grained control to manually apply the brakes on the trailer and takes no thinking to use.
Tesla and Rivian all are borrowing an Apple design philosophy of minimalism, and all three are screwing it up in the end. Because what starts out as a fine idea - minimalism in support of cheap production costs - inevitably is taken to the bitter end. I've never seen a minimalism design that knew where to sensibly stop, they usually end up with silly, unpractical or annoying features. For example, Apple slimmed down the external keyboard and dropped the keys until they became uncomfortable and hard to type on. I have one, the U key is already broken, and also have a bunch of the older ones with normal knife switches which still work fine with all the keys.
Tesla has taken minimalism to it's ridiculous bitter end. No stalks, two dumb little knobs with multi use. So when in an emergency you have to remember which one is the brake controller, whereas a dedicated old style one (probably a $4 part) takes no cognition. You automatically will reach out to that and do what you need. Steering wheel buttons only (minimalism to a fault) means that with the steering wheel flipped in a turn your indicators are backwards, and on the other side. Multi use wheels means not remembering which is what. Oh and you have to dig through a million menus, which for Tesla was a free installation. I asked every Tesla friend if they will buy another and all said no - they hate the new minimalism.
Bad design and bad engineering, I've never seen an engineering design that is it's best when driven to extremes. Its a kind of 'broken symmetry' - take a design philosophy and stop applying it at the 80%-90% point. This is as bad as the 'fin craze' back in the 50's, where every car had these huge shark fins everywhere. At least those look cool, extreme minimalism looks stupid and is unpractical.