ohnosir, I actually went through the exact same mini-crisis after discussion of LP started heating up, just because I had a story in mind that featured animal characters and strong... themes, like, it has a theme that's strong (strongly put forth), that's the only overlap, the theme itself is totally different. But I went through the same process of thinking, oh no, what if it's a Bad Take or what if I change my mind halfway and it ends up a total wreck?
Anyway, in the end, my opinion is that it doesn't really matter if you actually finish a story, only that you're happy with how it turned out. It's more important than anything that you don't burn out on your creativity because being creative is really, really taxing... way more taxing than people give it credit for. Both physically and mentally and probably even emotionally. I agree with everything Keep and Jitter have said, it's super important that you constantly take a few steps back and get a look at the bigger picture or see what's going on in the world. Minna's upload schedule is kind of overkill compared to what most other artists post, and that could have been one of many factors that led to LP being LP. I think it could've been a combination of burnout, tunnel vision, fatigue, and a whole bunch of other things but that's just a bit of speculation.
So, yeah, don't feel discouraged or afraid because of the direction Minna's work went down, but also don't do all the things that can cause an artist's passion to fizzle out. Maybe plan a bit beforehand or work out a kinder schedule or whatever organizing works best for you.
And perhaps the most important advice is to take well-meaning feedback seriously, as a few other forumites told me when I expressed my concerns.
Also, for the religious side of this discussion, I think it's good to keep away from a condescending attitude in general. Minna wasn't just an atheist, she was a condescending atheist (according to her notes from the day after LP was released or something?), so it's really the denial of other perspectives that led this way. It's good to remember that everyone has their own struggles and that people experience faith (or a lack thereof) differently... and to know when people aren't willing to give you the same respect.
Anyway, sorry if this makes little to no sense or hope it helps! I just finished two assignments in a day, so my head's still spinning a bit.