That’s true but no one could have predicted the sheer scale and devastation that 2008 was going to cause, well almost no one (I have watched the Big Short).
I am not against running a deficit and increasing spending if it is necessary to investment in the country’s infrastructure at the time and I believe we needed it when New Labour came to power.
The question is do you plan for the worse or hope for the best? They weren't responsible for the crash but the excess spending definitely left us in a position where government finances were vulnerable to a large scale crash.
The spending might be judged as necessary but how did it pay off? The debt interest repayments today are 4% of GDP, for comparison purposes we spend less on defence (2%) and not much more on the NHS (7%)!
Get Corbyn in and it will get worse and the major government expenditure will be debt interest repayments. We will all pay our tax and an increasing chunk of it will basically get thrown in the bin.
With his spending plans he will tax the rich and basically give it back to them with interest because the rich will be the ones buying up the government bonds to issue the debt!