Very good article about why it doesn't even matter whether the F-35 has a kill switch or not.
Without access to the maintenance network, the same result would be achieved but with a small delay.
Especially more advanced key features require access to the ALIS/ODIN cloud-based system.
https://www.twz.com/air/you-dont-need-a-kill-switch-to-hobble-exported-f-35s