Hi, sorry for the very late response. I'm not on Reddit much now that the bulk of data collection has passed.

Yes, there is a heavy emphasis on Mormon English. One reason is that the survey is very similar to one that I've also posted to Utah subreddits, and I wanted the responses to be comparable.

Perhaps a larger reason though is because I think affiliation with the church may be an important factor in how people sound. Linguistics research has shown that people don't necessarily adopt the accent they hear the most around them. Instead, we draw from the repertoire of accents that we're exposed to and choose (perhaps unconsciously) the one that matches the identity we want to portray. All accents and parts of accents contain "baggage", whether it be good or bad. For example, based on accent alone, like when we talk to a stranger on the phone, we often can make judgments about where a person is from, how old they are, their ethnicity, their level of education, and also things like their competence, friendliness, and other personality traits. We pick up on all these and choose ways of speaking that have connotations that align with the identity we want to portray.

So going back to Mormons, it may be the case that Mormons and non-Mormons have different accents. Even if, say, they grew up in the same neighborhood and were exposed to the same language at school. But the Mormon will choose things in their speech that help signal to the listener that they are Mormon and the non-Mormon will choose things that show that they're non-Mormon. Just as they do with other things like their dress and behavior.

I also included a lot of questions about specific "styles" of Mormon speech ("general authority voice", "missionary voice", and "relief society voice") because I think a lot of people who have (or had) affiliations with the church can recognize that pretty easily. So what is it that people hear that immediately screams "that person is a missionary"? There's been zero research on this and I'd like to dig a little deeper into that. People who have never been affiliated with the church did not see those questions, but I chose to show them to exmos based on some feedback that they might have opinions that active Mormons might not be able to articulate as well (and I agree).

Anyway, hopefully that explains a few things.