You appear to be avoiding discussing the concern of undue emphasis. The film's sci-fi element is a minor contextual device, which LvT has used before (in Epidemic), quite unlike the setting throughout Armageddon. (Aside: it would be interesting to see a word cloud of the descriptive phrases being used: "end of the world tragedy", "psychological disaster", "sci-fi-tinged disaster", "family drama"... If I were compelled to pick a standard sub-genre to describe the film, it would be "tragedy".)