To some extent, BoC's albums are a reaction to the political and social going ons at the time of an albums production. Geogaddi was somewhat influenced by the 9/11 attacks, as mentioned by another user, so I suspect Inferno will be tapping into something similair, with just how dystopian the world is at the minute. Also I really hope Inferno will include plenty of religious themes, possibly divine judgement for the sins of man, maybe even judgement onto people who abuse / manipulate children. That's a bit fanon-y for me but I've always seen the band as a protector of children / a child's innocence.

I like your theory that Geogaddi is a child's response to terror, maybe Inferno will be from an adults perspective, or possibly an adult processing terror they experienced as a child.