You really think we'd only have 65 f35s in the case of a war with China? If you're going to use ridiculous hypotheticals to make your argument then I can use another ridiculous hypothetical: in the case of a war with China we'd buy hundreds more f35s.
The original order was for about 80 units. But because of cost, that number has been reduced to 65. How do you expect to pay for them when the original estimate was said to be half of what it is now. And that was done deliberately to hide the true cost, and our government now admit it. Don't blame me for our governments screw up.
Furthermore, if 65 f35s won't stand a chance against China, do you think 80-100 j20s will (assuming the j20 is up to 50% cheaper)?
If we were to go to war with Norway (as an example) ... 65 units would be enough, and that might come to a draw. The only problem with a full blown war, and a possible land invasion of Canada or North America, at the moment China is behind in a land invasion capacity, but that is changing very quick. And if war with China happens, it will be against Russia as well.
If you need to buy hundreds more, in case of China.
1 - where is the money coming from?
2 - will they be delivered on time?
3 - is there enough foresight to consider getting the plane on time in case of a war?
Now buying them would be one thing, having them produced on time... that's another story. And well the F-35 still needs to be vetted in many ways before a stamp of approval can be put on it.
A war with China is not just hypothetical, but it's a real scenario that the Pentagon is taking into account. Pay attention to China's military. They have one retrofitted former Russian carrier, and are currently building a couple new ones, with the plans to build more. China is making large advances in those areas.
As others have pointed out, why do you think China is grabbing resources from around the world?
And for others, yes it is a multirole fighter. However it's a jack of all trades and master of none. And if we are spending that money on these things, I would want the VTOL version. The estimated costs NOW could easily pay for that variant.
Canadian taxpayers are getting hosed.