Yes, they do claim to do charitable work as to disaster zones, though we have also heard that they send brothers in after the volunteers do all of the work and leave on their own dimes and then they ask for the insurance checks.
So yeah, they are definitely kings of obfuscation and weasel words. I'm reading the publication and form 1023 but my eyes are getting blurry at this point and I'm not sure how much I care to dig in. I just thought it was an interesting point that made a lot of sense in giving them something to report that would be the crux of their supposed charitable work of preaching which is the main work that they do.
Or maybe simply qualifying as a church gives one all they truly need. The form 1023 requests more specifics and then there are mentions of "other circumstances" that are unclear that are taken into consideration. I guess without talking directly to a governmental entity that makes such decisions it would be hard to know anything for sure. It's still interesting to me, all of it.