

It wouldn’t even have to be that. There’s enough specialized US data communication and GPS microchips in there that any one of them could be compromised. There’s more than enough history of this, people not willing to consider it are part of a bubble: https://en.wikipedia.org/wiki/Hardware_backdoor#History
“The ‘kill switch’ in the F-35 is more than just a rumour,” Joachim Schranzhofer, the head of communications at German defense company Hensoldt informed the local media outlet Bild. “But it’s much easier to use the mission planning system - then the plane stays on the ground.”
I’ll take the word of the head of communication at a German defense company that has actually vetted the systems over armchair commenters any day.
Then there’s the possibility of backdoors to access mission critical data by deliberately compromising their encryption: https://www.atlasobscura.com/articles/a-brief-history-of-the-nsa-attempting-to-insert-backdoors-into-encrypted-data
Then there’s the chasm between “complete technical schematics” being available and actually being able to produce said equipment without resorting to a US controlled supply line. It’s not just firmware, if they cut off access to maintenance supplies, you aren’t going to have it easier than Russia is having it with their sanctions, it’s still going to take its toll on your supply line.

Emerdata, but I mean by now, Palantir and a dozen other businesses probably enjoying the smoke cover of being based in Israel “so don’t accuse you or you are antisemitic, yo!” private intelligence agencies (as in, extremely politically partisan globally) are involved.
There’s a reason Israel receives the support it has, and it has more to do with neocolonialism and relocation of those power groups within the private sector than it does the religion that provides the cover up for it. Having said that, Israel hasn’t been the only front for these geopolitical games, it’s just the most influential one because of how much of a feedback loop a relationship with those interests have for those involved.