I agree with many of your concerns. I'm not a contributor to YetiCold and only had a lengthy call with the main contributor @JWWeatherman_ which probably is worth nothing if in the end people lose funds but it might have skewed my confidence. I edited my comment above.

Your comment sounds like I was part of YetiCold. I am not. I just see this project is addressing many things in a very good way although I have not audited it very carefully. Many concerns can be mitigated the way they step through the whole process but one of my criticisms was also that there is no concise instructions one could read from start to finish. You actually have to do it to know how it goes. @JWWeatherman_ counters this with the videos that show the whole process.