Apple could trivially audit browser apps and provide warnings if they do not adhere to basic security policies literally every browser has implemented. This is a basic, user friendly approach.

Their behavior is akin to a small, bratty toddler throwing a little tantrum, but instead of being a small toddler, it is one of the largest corporations on the planet. Their "little tantrum" impacts lives and livelihoods, because they are upset a population has reps that actually represent them.

I hope they get what they deserve.