The fighter jet program was a jobs program, not dissimilar to how many US government programs are jobs programs by having different parts of it made in different states for no goo reason. Add in some nationalism and it was inevitable it would not work out.
And what, they couldn't split the jobs 50/50 in any meaningful way so that everyone was happy? Dunno, you can let the french design and the germans build or something.
If it's inevitable, then how come the F35's flying around? Sure there's some complaints to be made, but I've seen it work in person.
I always find it strange that being a "jobs program" is said as if derogatory, especially when talking about military equipment of all things. The free market optimizes for handling normalcy, not exception handling, like wartime. The reason to artificially these jobs is so that you have the factories and expertise to make these things when you need them.