In emergency services, specialists tend to be communications officers or dispatchers, or the radio shop, and variously assisted by the computers and the radio consoles that are increasingly supervising the radio networks.
To a reasonable degree, radios need to be useful and functional and understandable by everybody in the organization; to all of the users. It's this ubiquity that was at issue with the original article, and it's the radio's UI that tends to be inscrutable.