I have zero to add to the tech side here, but perhaps a bit from the industry side.
a lifetime ago, I worked product management in the auto aftermarket industry. every product is a compromise of many things including: ease of installation and cost.
there is also a wide rang of what is considered “bolt.on” by customers. And a wide range of skill sets and tool inventory among customers.
most companies, and it seems so in this case, try to make installs as straight as possible within reason. And try to be as straight as possible about what an install involves.
modern vehicles are frequently stubbornly resistant to mods. Everything in integrated and interconnected. Hence the cutting and fitting that is often required.
some companies, especially smaller, niche ones - do assume a higher level of technical understanding and mechanical skill given the specialized nature of thei products.
just random thoughts from an old industry dude.