Question Author
That sounds like the classic "politician's syllogism": we must do something, this is something, therefore we must do this.
I don't know what should be done instead. The problem is that Universal Credit's basic philosophy is flawed. A good deal of the reason the system has expanded to include so many benefits in the first place is that different benefits reflect different reasons for needing them -- or for being on them. Thus there is a reason housing benefit and Job Seeker's Allowance are separate. Bringing them together again is thus trying to impose simplicity where it does not exist.
Never made the administrative headache of trying to fuse seven separate benefits, only some of which were administered by the DWP. Tax Credits fell under HMRC, and Housing Benefits were administered by local councils -- meaning the reintegration task is larger than even trying to fuse seven separate systems! No wonder it has taken longer than IDS envisaged.
Which in a sense is the problem. It is a bad idea in principle; it's worse in practice. And yet IDS has been unable to see this and continues to pretend that everything is working smoothly despite falling years behind schedule already.