Its a lot like the install instructions you see for libraries: curl ... | sh
Security nightmare, disaster waiting to happen. Luckily normal users never do that so it hasn't broken the mainstream and developers "should" know better. So that's why nobody cares that they do it.
I think the implication is that developers "should" be smart enough to run Claude code in some kind of container or VM already with the rest of their dev tools. Kind of like how developers "should" be thoroughly reading an install script before piping it into a shell.
Do they? Probably not.