Not arguing with the second point, but I do want to argue with the first given a pattern that I've seen in the Infernal charmset. Every hell has a one dot charm that seems to be "survive and thrive in the environment of the hell in question." Boiling Oil has BSM, which not only prevents you from drowning or otherwise being harmed by swimming through the boiling oil, but empowers you as long as you're there, for every roll that you take in the sea, or in any other liquid for that matter. Same with WHWH, it doesn't just work with rolls against the cold like that of Kakuri, it works with every roll so long as it's cold enough, not just rolls to deal with the cold itself. Lanka and Wicked City are less obvious, but "make broken things work" seems like a reasonable empowerment to deal with the environment of a city where basically everything is broken. Same with Wicked City and the charm that lets you control technology with your mind, that's something that would put you in a position of power in the Wicked City. TLF is that charm for Burrowing Maggots. "Place of desolation" is the trigger for the empowerment, just like cold is for Kakuri, wet is for Boiling Oil, somewhere with broken things is for Lanka, and somewhere with technology that it would benefit you to control is for the Wicked City. Given the themes of Burrowing Maggots and charms like Mercy in Servitude, the ability to better protect others works as a fitting empowerment for the charm, like the empowerments granted by its counterparts in the other charmsets.
Also, that semantic argument feels like torture to extract meaning and implications that simply aren't there to my reading comprehension instincts. Even after hearing you explain it with direct quotes, I still don't fully understand how you got that implication from the text. It feels like reaching for a justification rather than the actual meaning of the text itself.