You misunderstand. Spunking a billion up the wall on the original purpose was a terrible idea. It just had nothing whatsoever to do with the scandal. Again as you well know.
There is a clear causal link. Billion pound systems bought on poorly drawn contracts under public sector systems tend to hang around making a stink and tempt the idiots at the top to reach into their playbook of arse-covering bad decisions to try and make the best of a bad job. This does not absolve anyone of their decisions and conduct after that point, but the original bad idea and decision to give it to Fujitsu are part of the chain of events. And you continue to call this ideology instead of my first hand experience