I do largely conglomerate Faithless and False, since the destination is usually the same, but that's a fair distinction that I probably should not gloss over - and you're right, those who aren't on the fast track with a particular god are more at risk while they're in the queue, as it were.

I think beyond that, there's the fuzziness of what is counted and not - the farmer who makes small observances because he wants a good harvest Is doing what is necessary - and it would be very few farmers who would go through those motions without meaning them, since they are doing them and earnestly hoping for a good season, and if they didn't they wouldn't be making the observance. The lip-service that the quote mentions is legitimate service, and counts appropriately, as opposed to empty lip-service, which is spoken without meaning or intent, such as a charlatan pretending to be a priest might.

Sadly, our sources are less than concrete on many aspects of this topic - even the wiki lacks proper sources for many of the things it says (there's a sad number of paragraphs that state things related to gods and worship, on the wiki, that sit there with the 'citation needed' tag, unsupported).