https://www.theregister.com/2026/02/18/jailbreak_an_f35/
There is a point.
Just look at the attack surface of a modern fighter jets with local mechanics, access to the code and access to the hardware.
As vendor this is a battle you have lost if your customer has the motivation to do so.
I also think this was aimed at the government of the county of the vendor there.
Because when he said:
"If you still want to upgrade despite everything, I'm going to say something I should never say, but I will anyway: you can jailbreak an F-35"
he really said:
"If you still want to upgrade despite everything, I'm going to say something that we decided in several meetings with a lot of people involved that I will say this in this specific way: you can jailbreak an F-35"