Also I think the analogy doesn't quite work because a truck is a truck. You can do some customization, you might (or not be) able to change some parts, or being a mechanical engineer you might even be able to repair it or enhance. But it will always fundamentally be a truck.

The difference from phones is that a phone is a computer, and as such it has computer's endless potential. For some it can be just a phone, sure. But many people want to use it as an extension of their mind, as knowledge management tool, as a creative tool, etc. The frustrating bit is that is many aspects phones are much nicer and better suited for such tasks than regular desktop computers (think portability, having cameras & sensors etc), yet because of these walled gardens it's much harder for a knowledgeable person to leverage this potential.

You are displaying your ignorance of trucks. For decades now, all automobiles and trucks have included proprietary computer systems. Some are easy to hack and alter. Some are more expensive/challenging, but people do it. An EV is missing _most_ of the mechanical parts that defined a "truck" for a century, and is basically only four tiny motors, brakes, a computer system, and a battery with wheels. The sole characteristics of "truck" that still remain which Henry Ford would recognize are "has wheels" and "can carry cargo".

They have computers but you can't use them to compute in any effective way. You can tune it, great, just like if it didn't have a computer.

Exactly. You have almost complete control over it which is exactly why trucks can last so long IRL. If your radio stops working you don't need to buy a new truck.