These are by far not always checked each week, and as such shouldn't be
called that.
Since they're almost always used through the `bit` instruction, it's
very inconvenient to just make wDailyFlags a `dw` instead.
Pokedex_PrintListing has a comment noting how it depends on wCurSpecies == wNamedObjectIndexBuffer; an assert would be more convenient, but is not possible since WRAM label addresses are not defined yet here.
I mean, technically, being able to read beyond a data table's size is
bad practice, but there's so many cases of this that it's not worth
mentioning.
For most of these cases, at least, it's safe to assume the index won't
ever get high enough to surpass such a table's length, because it's
either hardcoded or decided by the game without the use of
uncontrollable data. As such, they don't expose any actual bugs.