then it makes no sense why apple warns you that your device is performing "background" activities post update, last time I looked at iOS binaries they seem to decompile as-if it was bytecode - but it could also be related to more advanced debug directories haven't messed with internals of these devices since breaking the bootloader became pretty much impossible.
(+) Bitcode is now deprecated: https://digital.ai/catalyst-blog/navigating-apples-bitcode-c...