the radio system has been a source of problems since the release of chapter 2. it's MOSTLY hammered out and working as intended now, but i still get the occasional hang up on exiting vault 81 because the radio did a weird thing. the radio, as well as the similar remote management memory lounger, don't actually add that much as a gameplay tool unless you have fast travel disabled (those people seem to have decided to suffer that willingly, so there's probably no helping them), and it would be nice to be to opt out of a flakey system that doesn't do much and just talk to someone at HQ in person.
now the reality check: at this point, implementing the ability to do this would require, at the very least, alternative voice lines in the dialog system and alternate audio files, not to mention the possibility of having to re-record the voice actors for new lines for slightly different phrasing (i.e. getting a vocal take that doesn't include the chef's kiss slightly shouty off-mic amateur-with-a-speakerphone delivery jake uses over the radio for instance). with the challenges on xBox, and chapter 3 right around the corner, i don't think the team is going to be able to devote those resources to making something that MOSTLY works at this point more reliable, as much as i would like to see it.
maybe we'll see further patches for the radio or fall-back to in-person conversation branches added with or after the release of Chapter 3. maybe chapter 3 will include renewed restraint and refinement of edge-pushing systems like we did with the hyper-dialog camera in chapter 2 after all the troubles with "Where there's smoke". maybe someone will chop up and remix the existing audio and dialogs into a third-party "no radio" patch.
but any way you slice it, we're unlikely to see a strict radio-free option come out of the SS2 team because 1) the effort to reward balance is not good enough, compared to the work already in progress on chapter 3 and 2) the inherent inertia against admitting defeat and removing or working around someone's favorite system isn't really in character with a group of mental patients busily assembling sim city meets post-apocalypse forever war inside an otherwise medium shooter from 2016.
i'll vote for it. gotta love a good lost cause.