To return to the actual Question in the OP, I think the majority are agreed that scapegoating is not helpful, notwithstanding the need and desire for survivors and the bereaved to find out exactly what happened, and why - and we can all hope that the enquiry will deliver that information to us all in due course.
In the mean time, I have re-read the entire thread, and I remain of the opinion that prosecution is not appropriate, because procedures and protocols were followed correctly.
It is clear, once again with my previously mentioned 20/20 hindsight, that the protocols were not appropriate due to the construction of the building, which no-one from the fire service could have known about in advance.
For a properly designed and maintained block, the protocol of remaining would have been appropriate, the inferno occurred because of inappropriate external cladding which took the original internal fire, which would have been contained by fire doors, and made it an external fire whereby the building began burning from the outside in, with a scale and rapidity that left the fire service largely helpless, since it had taken a good hold of the building in a very short time.
Prosecution must appear attractive, because in the cases of huge loss of life, the instinct into find, and if not, make, someone responsible, to allow a sense of response to take place, which helps people come to terms with tragedies like this.
So although finding a scapegoat does feel like the correct response, it isn't, and therefore prosecutions at this stage would be utterly inappropriate.
If, when the enquiry evidence is provided and conclusions are drawn, it may be that legal action is deemed appropriate, but that will be for a time in the future, today, prosecution is not in my view a correct way to move forward.