Even if you accept the argument that austerity was necessary to create the conditions that allowed the furlough scheme, that doesn’t negate the impact of expenditure cuts on other services. There is no precise sun that can equate a missing bed with x amount of furlough scheme cash.
The only thing I would say is that of course Osborne would defend his time as chancellor, so it’s not clear why his submission was relevant - was it just for appearances? To give him a right of reply?.