Yes, there MUST be an enquiry, an independent one, I don't think anyone is stupid enough, or blindly partisan enough to be saying that there shouldn't be, or that it should all be swept under the carpet. Those who have lost everything, including family and friends, MUST be sure that the enquiry will happen, and blame MUST eventually be apportioned, and YES of course it is in the long run a political matter.
But "facts are chiels which winna ding" and facts are what MUST be exposed, from the warnings about the choice of materials and escape routes given earlier and ignored, to the reported absence of aids for the firefighters and rescuers. The fact that water cannot be pumped up from ground level to more than a certain number of storeys is relevant as another detail.
And the invaluable contributions of Sikh and Muslim neighbours must not be ignored, either.