You can see the small radii (look at the edge of the power strip for example) in most of these examples. You can get very small and tight radii on parts. You will get a sharp edge if you put the parting line of the tool on the edge of the part where the core meets cavity.
Low draft parts have been possible for a while. It may reduce part yield, require a polished finish which created complexity in handling and tooling design to avoid drag marks, but most vendors are willing to be aggressive down to .5 degrees of draft on polished parts which looks virtually square even it if it isn’t. You can also use side pulls in the tooling to get a perfectly perpendicular wall.
For translucent light pipes there are tons of options. But usually there is either an inserted clear/frosted part placed in from behind, or the part is two shot injection molded where the clear and opaque parts are molded together for a completely seamless look.