Thanks for the feedback. I'll consider that maybe docs should be optional, but opt-out. I also use the docs offline while I'm traveling. But we also get a lot of feedback that Rust downloads are too big.
Whether they are installed by default or not, it seems like component selection should be part of the install process.
Another consideration is that right now there is no way to define optional, opt-out, components. It will take more work in various places to make that possible.