Earlier quoted context omitted.
Aren't apps already sandboxed from eachother on both major Phone OS', unlike on Windows? So on that end something like Edges snooping around other browsers isn't even possible.
In theory, sure. The browser is bigger than the OS in total LOC. No one is auditing that. It is a question of when the video leaks of someone using their phone on the shitter. If its a Samsung... well were gonna hear google and Samsung blame each other and consumers will be confused till everyone forgets about it. If it's an apple, consumers blame apple. The buck stops with them. You have to make a business decision…
When Facebook has a bug/exploit in their app that results in X hacker being able to gain access to files stored within the sandbox of Facebook noone is blaming Apple for Facebooks bug.