Just an SWL here, whose sole exposure to digital ham transmissions is hearing the various noises on HF, but I'd think that if one is considering getting a ham license for emergency comm reasons, you'd probably want to look at the numbers.
In an actual emergency, you probably want to have access to the highest numbers of other hams possible, within your transmission range. What percentage use or have access to digital modes, compared to SSB? It's definitely a factor to consider.