alt Hacker NewsThe reason given for blocking Flash on iOS at the time was it's too cpu intensive on mobile, which impacts battery life. Not that it was "unsafe and broken".
The main reason other browsers stopped supporting Flash was websites stopped being built with Flash because iOS didn't support it, and a lot of people thought that mattered even though iOS had (and still has) a small market share world-wide.
> He cited the rapid energy consumption, computer crashes, poor performance on mobile devices, abysmal security, lack of touch support, and desire to avoid "a third party layer of software coming between the platform and the developer".
Sure, he's laying out a case for the app store they'd later introduce, but it wasn't simply CPU and battery. There's a reason I cited crash logs as the primary thing I remembered about how it affected me. It gave me an immediate reason to share with people about why I couldn't fix Safari crashes when Flash was involved, which made that aspect of my job easier to explain.
https://en.wikipedia.org/wiki/Thoughts_on_Flash