This statement I am going to make relates to the overall status of 5th generation stealth aircraft, and particularly to the place the F-35 is shaping up holding within it.
Every nation on earth who can try and develop 5th generation stealth is trying to do so.
Many of those who cannot, are buying it from those who can.
Those who cannot afford to do that, are left looking to develop or buy 4+ generation aircraft to hold their own.
The US (who already have two 5th generation stealth aircraft operational and have built and deployed over 300 5th gen stealth aircraft), China (who now has ten 5th gen stealth aircraft - 9 prototypes and one apparent production model. J-20 (9), J-31 (1)), Russia, (who has five prototype stealth aircraft), Japan, India, and South Korea all have their own 5th generation stealth aircraft programs at one degree of development or another. Japan will probably be the next nation to fly one, albeit a technology demonstrator.
A number of western countries have partnered with the US in the development of the F-35 Joint Strike Fighter 5th generation stealth aircraft and have helped (to one degree or another) fund it and develop it. Of the original eight countries that partnered with the US (Australia, Canada, Denmark, Italy, the Netherlands, Norway, Turkey, the United Kingdom) , five of those nations have already received one or more of their first aircraft and are flying and testing them...that's the UK, Netherlands, Norway, Australia, and Italy.. In addition, two of the three foreign customers, Israel, Japan, and the Republic of Korea, will be receiving their first aircraft in 2016.
So, by the end of 2016, you will have all of the following countries flying the F-35A or F-35B
The US (All three branches have numerous aircraft now and the Marines have IOC)
The UK
The Netherlands
Australia
Norway
Italy
Japan
South Korea
Israel
The argument against the F-35 in particular or waxing very old...and at this point, disproven. The orders and the progress speaks for themselves.
When you add in Russia and China, it means that in 2016 there will be eleven countries fluing 5th generation stealth aircraft of five varieties...nine of which will be flying the F-35.
US - F-22 and F-35
UK - F-35
Australia - F-35
Russia -PAK FA
Netherlands - F-35
Japan - F-35 and its ATD-X
South Korea - F-35
China - J-20 and J-31
Norway - F-35
Italy - F-35
Israel - F-35
The technology and its impact is going to do nothing but continue to expand and seriously impact air combat over the next several decades.
Pretty impressive when taken altogether.