Commenter in this branch put it all together just right. Also Dyatlov notes all industrial disasters was attributed to personnel error in Soviet Union, no matter which real reason it was, for political reasons.
I'll let myself add some reasoning about accusations against Dyatlov. Even if he violated some instructions (it is still not so clear), environment and way operations conducted in SU (and maybe in some modern countries too) implicitly require that. Management requires real results, not obedience to rules and instructions. Senior personnel has to deliver what is expected from them no matter how. But if something goes wrong, negligence to rules will be formal reason to blame. So, there was no evil layman who got himself near top of hierarchy and made evil decisions. All hierarchy consists of people who was installed at their positions for a reason and they do what is expected from them. Otherwise, replacement occurs.
Basically, if you replace in this situation Dyatlov with somebody of same rank, outcomes could be eventually same or even worse.
Interesting. So in short, even if Dyatlov did make some shortcut and violated safe practices, this was probably mainly due to corrupt system that forced people to violate the rules to maintain their jobs. This helped the higher ups to easily exploit the workers and easily find a scapegoat when necessary. The soviet system was real sick.
It's not just about losing job or other penalities, it is also about futility of resistance to corruption. If you are openly against system, you get replaced and your place will be taken by less experienced but more convenient person. Good leader in such situation should play politics and follow common rules in order to retain at least chance to make some decisions on his own and step in when situation is critical.
However, that trait is not unique to Soviet system only. If you look wider, you probably will be able to resemble Volkswagen scandal, Boeing MAX, Fukusima and so on. Boeing case looks clearly as outcome of "just make it fly" decision.
I'll let myself add some reasoning about accusations against Dyatlov. Even if he violated some instructions (it is still not so clear), environment and way operations conducted in SU (and maybe in some modern countries too) implicitly require that. Management requires real results, not obedience to rules and instructions. Senior personnel has to deliver what is expected from them no matter how. But if something goes wrong, negligence to rules will be formal reason to blame. So, there was no evil layman who got himself near top of hierarchy and made evil decisions. All hierarchy consists of people who was installed at their positions for a reason and they do what is expected from them. Otherwise, replacement occurs.
Basically, if you replace in this situation Dyatlov with somebody of same rank, outcomes could be eventually same or even worse.