And that's what overreaction brings... just because Apple have released a new authoring package hasn't mystically destroyed all other current methods of authoring... if you don't like it, don't use it but stop behaving like yo-yos because Apple has released a tool and format variations that favour... wow, Apple's products...
It doesn't stop you doing what you did before, it just adds another alternative...
And see
https://www.mobileread.com/forums/sho...d.php?t=166506