I subscribe to the official explanation recently advanced by Soviet authorities. To put is succinctly, the inclement weather and the inability of the tourists to make use of frozen streams slowed the ascent toward Dyatlov pass and Otorten. They offloaded and cached supplies and then proceeded to make camp on the slope of 1079, so as to not lose time, nor altitude. The conditions were such that a slab slide occurred forcing the hikers from their tent to the forest below etc, etc.. In other words, I have no questions as to the " how" of their deaths. They all died of hypothermia, some few coupled with falls, being fallen upon and burned. The "why" of their deaths is that they were not equal to the conditions. Further, they were poorly funded and equipped, not cohesive as a group and had inferior maps. In spite of individual bravery and sacrifice, the DP9 succumbed to the Russian Winter. There was no conspiracy, no cover up, no bogie men. All the political and social fall out that happened after the fact is just the classic NIMBY that happens when precious cargo. Occam's Razor.
For me, all banter and badgering that goes on in the forum is simply individuals more interested in spin and self aggrandizement. Follow the money.