It is an interesting debate. I suppose the question is how much funding do you want to give the NHS so that it is always "crisis ready"?
The ideal situation is that it is always "over-funded" with a surplus of nurses and doctors so that we have surge capacity for when something hits. The flip side of that is how much are we willing to pay to make that happen when it is maybe only needed once a decade?
As always the answer is in the middle somewhere. I'm lucky to be in a position where I could afford to pay some extra tax to help make the NHS, dare I say it, "world beating"... but that is obviously not true of a lot of people, and even a lot of people who could afford it wouldn't always be so keen. It's also likely to be a lot more money than people realise...