Why its clear the cladding in this case is the cause for this fire, no doubt. While the type of cladding used was a huge factor on the fast spread, fire breaks would have slowed it down(thats there purpose if they cant stop the blaze). The speed that it went up showed that there were either none or little and you got the chimney effect shown on the second picture.
Considering the post I questioned you on, it is useful you have now added this clarification of opinion.
Now perhaps the people who were defending the cladding concept from the point of view on heating efficiency could answer any relevant questions on that such as:
Can you house 150 people in a more heat efficient manner?
In what time scale is the energy impact if cladding outweighed by heating savings?
If this issue has been identified what has happened to building regulations since then?
No doubt the current government can yet again come out and say "enough is enough" etc etc, Ignoring that they have been government for the last 7 years.