What guarantee? Did the founder of the FSCS go on record saying if it ever fails and whoever's in charge of it is not imprisoned, then instead they should be shot?

Here in the US, our banking system is run by the kind of people who deny accountability for everything. Cops won't arrest them for crimes and society upholds the idea that if you shoot them to compensate for the lack of arrests, that somehow means you should be arrested. There are no guarantees for anyone, there's just a life or death free for all triggered by bloodthirsty people so powerful they've stopped us all from escaping their game. I assume it's the same in the UK