This approach has been adopted by the SRE movement under the "blameless postmortem culture" alias: https://landing.google.com/sre/sre-book/chapters/postmortem-...
Blame is such a complicated thing and the results of any mess are always way complicated even without the human factor.
I'm not convinced in any complex system outside of a guy running through a datacenter with a hammer... that anyone can actually "properly" assign blame or fault.
Humans are going to dork up, but no point in coming down on someone(s) for all the complexity that leads to a problem..... helping everyone avoid it on the other hand has a lot of benefit.