What? in 2012 Eu compromised on Every Single Point. Every points. Not as much as the UK wanted sometime, but to put the brexit on EU is disingenuous.
Also, the US government is really weird on EU security. Because while Trump pushed for higher defense spending, the military was in Belgium and Germany saying "See, you have to get new fighters carrying our bombs, and since the Viper is abandoned and we won't upgrade your F18 into superhornets, you will have to buy our F35". So Germany and Belgium at least will be paying an order of magnitude more in maintenance costs for at best the same air capabilities. But they did finance Lockheed, so all is good?
You are misrepresenting what happened with tactical aircraft purchases. Germany, Belgium, and several other countries voluntarily participate in the NATO nuclear sharing program. In order to continue with that they need a nuclear capable aircraft. The US Air Force was already paying to certify the F-35A as a nuclear bomber, so other NATO buyers get that essentially for free. They were free to purchase other aircraft and pay for nuclear certification (like they did previously with the Tornado) but chose not to do so.
The Lockheed-Martin F-16 Viper is still in active production and the Air Force is upgrading theirs with new radars so it's hardly abandoned. It is physically impossible to upgrade a legacy Boeing F/A-18 Hornet to an F/A-18E/F Super Hornet because the airframes are different, but new ones are also still in production. US allies are welcome to purchase either aircraft, but neither one is nuclear capable. Those aircraft are also considered less survivable against Russian air defenses than the F-35, so hardly the same capabilities at all.
Also, the US government is really weird on EU security. Because while Trump pushed for higher defense spending, the military was in Belgium and Germany saying "See, you have to get new fighters carrying our bombs, and since the Viper is abandoned and we won't upgrade your F18 into superhornets, you will have to buy our F35". So Germany and Belgium at least will be paying an order of magnitude more in maintenance costs for at best the same air capabilities. But they did finance Lockheed, so all is good?